NEET Biology Drugs And Drug Abuse Multiple Choice Question And Answers

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Biology MCQs with answers for NEET Drugs And Drug Abuse

Question 1. Opium is obtained from

  1. Oryza sativa
  2. Coffea arabica
  3. Thespesia popular
  4. Papaver somniferous

Answer: 4. Papaver somniferous

  • Papaver somniferum, commonly known as the opium poppy or bread seed poppy, is a species of flowering plant in the family–Papaveraceae.
  • It is the species of plant from which opium or poppy seeds are derived and is a valuable ornamental plant, grown in gardens.

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Question 2. The other name for heroin is

  1. Hemp
  2. Smack
  3. Coke
  4. Bhang

Answer: 2. Smack

Some common names for heroin are smack, white junk, brown crystal, black tar, horse, etc.

Question 3. Smack is a drug obtained from the

  1. Latex of papaver somniferum
  2. Leaves of cannabis sativa
  3. Flowers of datura
  4. Fruits of Erythroxylum coca

Answer: 1. Latex of papaver somniferum

Smack is obtained by acetylation of morphine, which is extracted from the latex of the poppy plant Papaver somniferum.

Question 4. Which part of the poppy plant yields opium?

  1. Latex from unripe capsules
  2. Dried roots
  3. Dried leaves
  4. Dried seeds

Answer: 1. Latex from unripe capsules

Opium is obtained from the latex of unripe capsules of the poppy plant (Papaver somniferum)

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Question 5. Smack is generally consumed

  1. By snorting
  2. By injection
  3. Both (1) and (2)
  4. None of these

Answer: 3. Both (1) and (2)

Heroin is a white or brown powder, odourless, bitter, crystalline compound. It can be mixed with water and injected with a needle. Heroin can also be smoked or snorted up the nose.

Question 6. Diacetylmorphine is commonly known as

  1. Morphine
  2. Cannabis
  3. Heroin
  4. Cocaine
  5. Hashish

Answer: 3. Cocaine

Heroin is an opiate narcotic (opium derivative). Chemically, it is diacetylmorphine.

Question 7. Which of the following set of drugs is extracted along with unripe opium fruit?

  1. Codeine, morphine and heroin
  2. Hashish, codeine, pethidine, morphine and methadone
  3. Codeine, pethidine, methadone, morphine and heroin
  4. Codeine, pethidine, methadone and cocaine

Answer: 1. Codeine, morphine and heroin

  • Opium poppy (Papaver somniferum) is a flowering plant of the family–Papaveraceae and is native to Turkey.
  • Opium, morphine, codeine and heroin all are derived from the milky latex found in its unripe seed capsule.
  • It is also grown for its tiny non-narcotic ripe seeds, which are kidney-shaped and greyish-blue to dark blue. The seeds are used in bakery products and for seasoning, oil and birdseed.

Question 8. Drug called ‘Heroin’ is synthesised by

  1. Methylation of morphine
  2. Acetylation of morphine
  3. Glycosylation of morphine
  4. Nitration of morphine

Answer: 2. Acetylation of morphine

Heroin, commonly called smack and is chemically diacetylmorphine, which is synthesised by acetylation of morphine.

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Question 9. Which is the most dangerous narcotic?

  1. Morphine
  2. Heroin
  3. Opium
  4. Codeine

Answer: 2. Heroin

Heroin is the most dangerous amongst opiate narcotics as it produces total dependency.

Question 10. Consider the following statements.

  1. Opioids are drugs, which bind to opioid receptors in the central nervous system and gastrointestinal tract.
  2. Heroin is a white, odourless, bitter, crystalline compound.
  3. Heroin is commonly called smack.

Which of the statements given above is/are correct?

  1. 1 and 2
  2. Only 3
  3. Only 2
  4. 1, 2 and 3

Answer: 4. 1, 2 and 3

  • All the given statements are correct.
  • Opioids are drugs, which bind to opioid receptors in the central nervous system and gastrointestinal tract.
  • Drugs derived from the extract of opium (poppy), for example, morphine, heroin, brown sugar, etc. Heroin, commonly called smack is chemically diacetylmorphine, which is a white, odourless, bitter, crystalline compound.
  • This is obtained by acetylation of morphine, which is extracted from the latex of the poppy plant Papaver somniferum.

Question 11. Smack is chemical ___________ A ________, which is white, odourless and crystalline in nature. This is obtained by _________ B _______

  1. A–diacetylmorphine, B–acetylation of morphine
  2. A–morphine, B–acetylation of hashish
  3. A–stimulant, B–acetylation of morphine
  4. A–hallucinogen, B–acetylation of hashish

Answer: 1. A–diacetylmorphine, B–acetylation of morphine

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Question 12. Opium, morphine, heroin, pethidine and methadone are collectively called as

  1. Tranquilisers
  2. Stimulants
  3. Hallucinogens
  4. Opiate narcotics

Answer: 4. Opiate narcotics

Opiate narcotics are opium and its derivatives which suppress brain activity and relieve pain. These include opium, morphine, pethidine etc.

Question 13. Naloxone is used as an antidote given intravenously for the overdose of

  1. Heroin
  2. Opium
  3. Librium
  4. Morphine
  5. Alcohol

Answer: 2. Opium

  • Opioid (opium) overdose is a challenging condition that requires a difficult balancing act between over and under-treatment with naloxone.
  • The later is an antidote of opium and it is given intravenously for quick reactions.

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Question 14. The effect of opiates is

  1. Numbing of pain causing drowsiness, lethargy and feeling of well-being
  2. Reduction of anxiety and tension
  3. Lowering of blood pressure and breathing rate
  4. All of the above

Answer: 4. All of the above

Opium suppresses pain, reduces anxiety and tension, induces drowsiness and lower breathing rate and blood pressure.

Question 15. Overindulgence in food and then vomiting is the nervous disorder called

  1. Schizophrenia
  2. Amnesia
  3. Anorexia nervosa
  4. Bulimia

Answer: 4. Bulimia

  • Bulimia nervosa, also known as simply bulimia, is an eating disorder characterised by binge eating followed by purging.
  • Binge eating refers to eating a large amount of food in a short amount of time.
  • Purging refers to the attempts to get rid of the food consumed. This may be done by vomiting or taking laxatives.

Question 16. Opioids are drugs that bind to specific opioid receptors present in our

  1. Central nervous system
  2. Urinogenital system
  3. Gastrointestinal tract
  4. Both (1) and (3)

Answer: 4. Both (1) and (3)

Opioids are drugs, which bind to specific opioid receptors present in our central nervous system and gastrointestinal tract.

Question 17. The king of narcotics is

  1. Opium
  2. Lsd
  3. Alcohol
  4. Cocaine

Answer: 1. Opium

  • Of the 20 or more alkaloids found in opium, the most important is morphine, which is primarily responsible for opium’s narcotic properties.
  • Drugs with actions similar to morphine that are produced synthetically are known as opioids.
  • Opium can rightly be called the ‘king of narcotics’ perhaps no other narcotic enjoys so much popularity as opium. Strong addictive drugs, such as heroin are synthesised from it.

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Question 18. ‘Hot shot’ relates to ________ of abusive drugs.

  1. Injection
  2. Inhalation
  3. Drinking
  4. Shooting

Answer: 1. Injection

Sometimes an addict gets a sample of heroin which is adulterated with dangerous poison strychnine. Its injection is known as a ‘hot shot’ can cause quick death. 3-5% pure heroin can also cause hot shot.

Question 19. Morphine is

  1. A very effective sedative and pain-killer
  2. Very useful in patients who have undergone surgery
  3. Both (1) and (2)
  4. Stimulant

Answer: 3. Both (1) and (2)

Morphine is a very effective sedative, pain-killer and is very useful in patients who have undergone surgery.

Question 20. Cannabinoids is obtained from ________ of ________

  1. Inflorescence, cannabis sativa
  2. Fruits, papaver somniferum
  3. Latex, cannabis sativa
  4. Inflorescence, papaver somniferum

Answer: 1. Inflorescence, cannabis sativa

Cannabinoids can be extracted from the dried, seedless inflorescence of female Cannabis sativa plants.

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Question 21. The drug ‘marijuana’ is obtained from

  1. Cannabis sativa
  2. Papaver somniferum
  3. Atropa belladonna
  4. Datura alba

Answer: 1. Cannabis sativa

  • The term marijuana most commonly used in America, corresponds to the Indian bhang. The drug is obtained from dried leaves, stems and flowering shoots of male and female Cannabis sativa plants.
  • Sometimes even the seeds are included in the crude drug. Other names commonly used for the drug are ‘kif’, ‘dagga’, ‘pot’ and ‘grass’.

Question 22. Hashish and charas are obtained from

  1. Rauwolfia serpentina
  2. Cannabis sativa
  3. Papaver somniferum
  4. Claviceps purpurea

Answer: 2. Cannabis sativa

  • Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain.
  • They include hashish and charas which obtained from Cannabis sativa.

Question 23. The flower tops, leaves and resin of Cannabis sativa produce.

  1. Marijuana
  2. Hashish
  3. Charas
  4. All of these

Answer: 4. All of these

The flower tops, leaves and the resin of Cannabis sativa are used to produce marijuana, hashish, charas and ganja.

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Question 24. 9-tetrahydrocannabinol is extracted from

  1. Papaver
  2. Cannabis
  3. Ergot
  4. Erythroxylon

Answer: 2. Cannabis

9-Tetrahydrocannabinol (THC) is the chemical present in marijuana and is extracted from Cannabis.

Question 25. The drug useful to increase cardiovascular effects in human beings is

  1. Cocaine
  2. Barbiturate
  3. Benzodiazepine
  4. Insulin

Answer: 1. Cocaine

The drug useful to increase cardiovascular effect in human being is cocaine.

Question 26. Cocaine is obtained from

  1. Thea Sinensis
  2. Papaver somniferum
  3. Erythroxylum coca
  4. Coffea arabica

Answer: 3. Erythroxylum coca

The leaves of Erythroxylum coca (Coca bush) gives cocaine, a white crystalline alkaloid chemically called benzoylmethyl ecgonine.

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Question 27. Cocaine is native to

  1. North America
  2. South America
  3. India
  4. China

Answer: 2. South America

Cocaine in its various forms is derived from the coca plant, which is native to the high mountain ranges of South America.

Question 28. Maximum cocaine production is in

  1. Paris
  2. Colombia
  3. Bolivia
  4. Brazil

Answer: 2. Colombia

Colombia is the world’s top producer of cocaine and cultivation of coca. Colombian cocaine production hit record levels in 2017, according to newly released UN statistics. Peru and Bolivia are the other important cocaine-producing countries.

Question 29. Which one of the following is a stimulant?

  1. LSD
  2. Cocaine
  3. Opium
  4. Heroin
  5. Cannabis

Answer: 2. Cocaine

Cocaine is a stimulant drug as it directly affects the central nervous system. It was used in the past as a local aesthetic.

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Question 30. Some athletes use and consume cocaine because it acts as a

  1. Stimulant
  2. Hallucinogen
  3. Sedative
  4. Anabolic compound

Answer: 1. Stimulant

Cocaine is a powerful and addictive stimulant that can be snorted, smoked or injected. So, some athletes use and consume it.

Question 31. Overdose of cocaine causes

  1. Hallucination
  2. Respiratory disorders
  3. Cardiovascular failure
  4. All of the above

Answer: 4. All of the above

Cocaine is a strong stimulant and when taken in overdose causes headaches, convulsions hallucinations and death due to cardiovascular or respiratory failure.

Question 32. The given below figures show

NEET Biology Drugs And Drug Abuse MCQs Morphine And Canabinoid

  1. A–Cannabinoid, B–Morphine
  2. A–Morphine, B–Cannabinoid
  3. A–Morphine, B–Quinine
  4. A–Quinine, B–Cannabinoid

Answer: 2. A–Morphine, B–Cannabinoid

Question 33. The use of cannabis products (bhang, ganja, charas, marijuana or hashish) causes

  1. Depression of brain activity and feeling of calmness
  2. Alters thoughts, perceptions and feelings
  3. Suppresses brain function and relieves pain
  4. Stimulates the nervous system and increases alertness and activity

Answer: 2. Alters thoughts, perceptions and feelings

Hallucinogen like Cannabis products alters thoughts, perceptions and feelings.

Question 34. LSD is obtained from

  1. Erythroxylon coca
  2. Papaver somniferum
  3. Cannabis sativum
  4. Claviceps purpurea
  5. Neurospora crassa

Answer: 4. Claviceps purpurea

Lysergic Acid Diethylamide (LSD), also known as acid, is a hallucinogenic drug. Ergot of rye is produced by a lower fungus. LSD is obtained from Claviceps purpurea.

Question 35. LSD addiction causes

  1. Kidney damage
  2. Increase in heartbeat rate
  3. Hallucinations
  4. Mental and emotional disturbance

Answer: 3. Hallucinations

  • Serotonin is a neuromodulator contained mainly in brain stem neurons and produced in full alertness.
  • Most of hallucinogenic agents like LSD and alcohol inhibit serotonergic neurons of the cerebellum, thus causing hallucinations.

Question 36. Pickup the psychedelic drug amongst the following.

  1. Lysergic acid diethylamide
  2. Barbiturate
  3. Cocaine
  4. Monoamine oxidase

Answer: 1. Lysergic acid diethylamide

Lysergic Acid Diethylamide (LSD) is an extremely potent psychedelic ergot alkaloid derived from the fungus (Claviceps purpurea). LSD is one of the most powerful hallucinogenic drugs known.

Question 37. Which of the following are psychotropic drugs?

  1. Hallucinogenic
  2. Stimulants and tranquilisers
  3. Both (1) and (2)
  4. None of the above

Answer: 2. Stimulants and tranquilisers

  • Stimulants and tranquillizers are psychotropic drugs. These drugs affect behaviours, mood, thoughts or perception.
  • These either stimulate or depress the brain activity and act as anti-anxiety agents.

Question 38. The alkaloid ajmalicine is obtained from

  1. Atropa
  2. Papaver
  3. Curcuma
  4. Sarpagandha

Answer: 4. Sarpagandha

Sarpagandha botanically known as Rauwolfia serpentina belongs to the family- Apocyanceae. Its tuberous roots are used as medicines. Ajmalicine is isolated from Rauwolfia roots.

Question 39. Which one of the following is the correct match?

  1. Reserpine – Tranquiliser
  2. Cocaine – Opiate narcotic
  3. Morphine – Hallucinogenic
  4. Bhang – Analgesic

Answer: 1. Reserpine – Tranquiliser

Reserpine derived from Rauwolfia, is used as a tranquiliser. Other options are incorrectly matched pairs and can be corrected as Morphine is an opiate narcotic, bhang is a hallucinogen, and cocaine is a stimulant.

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Question 40. A drug called Reserpine was discovered by

  1. JR Vakil
  2. Paul Ehrlich
  3. Hansen
  4. Alexander wood

Answer: 1. JR Vakil

Rustom JR Vakil discovered reserpine from Rauwolfia.

Question 41. Resperine, a hypersensitive, drug is obtained from

  1. Seeds of Withania foraminifera
  2. Catharanthus roseus
  3. Rauwolfia
  4. Syzygium

Answer: 3. Rauwolfia

  • Reserpine is an alkaloid, derived from the roots of Rauwolfia serpentine and vomitoria.
  • It is an adrenergic uptake inhibitor with antihypertensive effects. Reserpine is lipid soluble and can penetrate the blood-brain barrier.

Question 42. The drugs used by weight-conscious people, to reduce appetite and increase alertness are

  1. LSD
  2. Morphine
  3. Amphetamines and cocaine
  4. Aspirin

Answer: 3. Amphetamines and cocaine

  • Amphetamine is a powerful stimulator of the central nervous system. In the past, it has been used to treat narcolepsy and to help with weight loss, but this is less common now.
  • Now, it is mainly used to treat ADHD and rarely, depression. The effects of cocaine include elevated mood, increased alertness and suppression of appetite and fatigue.

Question 43. Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown here?

NEET Biology Drugs And Drug Abuse MCQs Abuse Plant Obtained

  1. Hallucinogen
  2. Depressant
  3. Stimulant
  4. Pain-killer

Answer: 1. Hallucinogen

The plant illustrated in the diagram is Datura. Seeds of Datura stramonium are misused for their hallucinogenic properties because of the presence of anticholinergic alkaloids atropine, hyoscyamine and scopolamine ( hyoscine). However, even in slight excess, they can cause death.

Question 44. Barbiturates are

  1. Antidepressant
  2. Sedatives
  3. Narcotics
  4. Antibiotic

Answer: 2. Sedatives

Drugs like barbiturates are normally used as medicines to help the patient cope with mental illnesses like depression and insomnia, so it acts as sedatives.

Question 45. Patients suffering from mental illness are prescribed ________ as drugs.

  1. Barbiturates
  2. Amphetamines
  3. Lysergic acid diethyl amides
  4. All of the above

Answer: 4. All of the above

Drugs like barbiturates, amphetamines, benzodiazepines, Lysergic Acid Diethyl amides (LSD) and other similar drugs, are normally used as medicines to help patients cope with mental illnesses like depression and insomnia.

Question 46. Sleeping pills contain

  1. Barbiturates
  2. Cocaine
  3. Opiates
  4. LSD

Answer: 1. Barbiturates

Barbiturates are a drug in the sedative-hypnotic class. They depress your central nervous system and can make a person sleepy.

Question 47. Sedatives are

  1. Pain reliever
  2. Sleep inducer
  3. Anxiety reliever
  4. All of these

Answer: 4. All of these

  • Sedative drugs are helpful for treating anxiety and sleep problems, but using them can lead to dependence or addiction. Sedatives are a category of drugs that slow brain activity.
  • Also known as tranquilisers or depressants, sedatives have a calming effect and can also induce sleep.

Question 48. Aspirin is given for minor heart stroke because

  1. It reduces oedema
  2. It is a painkiller
  3. It has ability to inhibit the production of blood platelet aggregates
  4. All of the above

Answer: 3. It has the ability to inhibit the production of blood platelet aggregates

  • Aspirin keeps platelets from clumping together, thus helping to prevent or reduce blood clots.
  • During a heart attack, blood clots form in an already-narrowed artery and block the flow of oxygen-rich blood to the heart muscle (or to part of the brain, in the case of stroke).

Question 49. A male shows increased aggressiveness, mood swings, depression, reduction in testicle size, decreased sperm production, enlargement of breast, premature baldness. These are indicators of

  1. Use of anabolic steroids
  2. Use of heroin
  3. Use of marijuana
  4. Use of morphine

Answer: 1. Use of anabolic steroids

In males, drug effects include acne, increased aggressiveness, mood swings, depression and reduction of size of the testicles, decreased sperm production, potential for kidney and liver dysfunction, breast enlargement, premature baldness, and enlargement of the prostate gland. These all symptoms mean, there is the use of anabolic steroids.

Question 50. Steroids have been used as anti-inflammatory drugs in the treatment of

  1. Rheumatic fever
  2. Acute glomerulonephritis
  3. Rheumatoid arthritis
  4. All of the above

Answer: 4. All of the above

Steroids have been used as anti-inflammatory drugs in the treatment of rheumatic fever, acute glomerulonephritis, rheumatoid arthritis, etc.

Question 51. Women who consumed the drug thalidomide for relief from vomiting during the early months of pregnancy gave birth to children with

  1. No spleen
  2. Hare-lip
  3. Extra fingers and toes
  4. Underdeveloped limbs

Answer: 4. Underdeveloped limbs

  • Intake of thalidomide during pregnancy provides relieve from morning sickness and vomiting.
  • The mechanism behind birth defects induced by thalidomide involves its teratogenic ability to bypass the placenta and it results into underdeveloped limbs of foetus.

Question 52. Those who take intravenous drugs develop a risk of

  1. AIDS
  2. Hepatitis-B
  3. Both (1) and (2)
  4. Malaria

Answer: 3. Both (1) and (2)

  • Those who take intravenous drugs (direct injection into the vein using a needle and syringe) are much more likely to acquire serious infections like AIDS and hepatitis-B.
  • The viruses, which are responsible for these diseases, are transferred from one person to another by sharing of infected needles and syringes.

Question 53. Analgesic dugs

  1. Form tissues
  2. Relieve pain
  3. Relieve fatigue
  4. Cause pain

Answer: 2. Relieve pain

Analgesic drugs relieve pain, example ibuprofen.

Question 54. Adolescence is derived from ‘adolescent’ which is a

  1. French word
  2. Greek word
  3. German word
  4. Italian word

Answer: 1. French word

Adolescence is a bridge linking childhood and adulthood. It is derived from the French word ‘adolescence’.

Question 55. Adolescence means

  1. Growing up in height
  2. Growing up mentally
  3. Growing up physically
  4. Growing up in all respects

Answer: 4. Growing up in all respects

  • Adolescence means growing up in all respects physically, mentally, etc. It is accompanied by several biological and behavioural changes.
  • The period between 12-18 years of age may be thought of as adolescence period.

Question 56. During adolescence, a person wants to establish

  1. His/her own identity
  2. Good moral character
  3. As an important member of the family and society
  4. All of the above

Answer: 4. All of the above

  • During adolescence, a person wants to establish his/her own identity, develop his moral character, wants to be a responsible and important member of family and society.
  • It is a critical stage where the holistic development of an individual takes place.

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Question 57. The physical changes during adolescence in boys are as follows. 

  • Development of hair on the face, in the armpit and pubis
  • There is a change in voice which become hoarse
  • Development of Adam’s apple in the neck
  • Development of breast

Answer: 4. Development of breast

The physical changes in boys between the ages of 13 and 17 include rapid growth, an increase in body and facial hair, developing sexual organs and undergoing voice changes. Breast do not develop in boys.

Question 58. The physical changes during adolescence in girls are as follows. 

  1. Menstruation
  2. Development of Adam’s apple in the neck
  3. Development of pubic hair and hair in armpits
  4. Development of breast

Answer: 2. Development of Adam’s apple in the neck

Development of Adam’s apple does not take place in females.

Question 59. Fill up the blanks.

  1. A person in the age group _________ can be referred to as an adolescent.
  2. The period of adolescent is bridge between _____ and ________
  3. _________ and _______ are damaged due to drug and alcohol abuse.
  4. Persistent use of alcohol during _________ causes Foetal Alcohol Syndrome (FAS)

 

  1. 1–12-18, 2–childhood, adulthood, 3-Digestive system, heart, 4–childhood
  2. 1–10-15, 2–puberty, adulthood, 3–Heart, stomach, 4–adulthood
  3. 1–15-20, 2–adulthood, old age, 3-Liver, kidney, 4–pregnancy
  4. 1–12-18, 2–childhood, adulthood, 3–Nervous system, liver, 4– pregnancy

Answer: 4. 1–12-18, 2–childhood, adulthood, 3–Nervous system, liver, 4– pregnancy

Question 60. Which of the following is/are the reasons for alcohol abuse in adolescents?

  1. Social pressure.
  2. Curiosity and need for adventure, excitement and experiment.
  3. To escape from stress, depression and frustration.
  4. To overcome hardships of daily life.

Which of the statements given above are correct?

  1. 1, 2 and 3
  2. 1, 3 and 4
  3. 2, 3 and 4
  4. 1, 2, 3 and 4

Answer: 4. 1, 2, 3 and 4

  • All given statements depict accurate reason for alcohol abuse in adolescents. Curiosity, need for adventure and excitement and experimentation, social pressure, constitute common causes, which motivate youngsters towards drug and alcohol use.
  • Thus, the first use of drugs or alcohol may be out of curiosity or experimentation, but later the child starts using these to escape facing problems.
  • Of late, stress, from pressures to excel in academics or examinations, has played a significant role in persuading youngsters to try alcohol and drugs.

Question 61. Side effects of use of anabolic steroids in females are

  1. Masculinity
  2. Aggressiveness
  3. Mood swings, depression
  4. Abnormal menstrual cycle
  5. Excessive facial and body hair

Choose the correct option.

  1. 1, 2 and 3
  2. 1, 2, 3 and 4
  3. 2, 3, 4 and 5
  4. 1, 2, 3, 4 and 5

Answer: 4. 1, 2, 3, 4 and 5

The side effects of the use of anabolic steroids in females include masculinisation (features like males), decreased aggressiveness, mood swings, depression, abnormal menstrual cycles, excessive hair growth on the face and body, enlargement of the clitoris, and deepening of the voice.

Question 62. Anabolic steroids are misused by

  1. Doctors for self-medication
  2. Players
  3. People who have to remain wake for long as soldiers
  4. All of the above

Answer: 2. Players

  • Anabolic steroids help build muscle tissue and increase body mass by acting like the body’s natural male hormone, testosterone. So, it is misused by players.
  • However, steroids cannot improve an athlete’s ability or skill.

Question 63. Cataract is a common symptom with patients who consume __________ for long duration.

  1. Analgesic drugs
  2. Alcohol-based drugs
  3. Steroids
  4. All of the above

Answer: 3. Steroids

  • Taking steroids can cause posterior subcapsular cataracts. They cause a small, cloudy area to form underneath the eye’s lens.
  • While cataracts are a known side effect for some people when taking steroids, they are highly treatable.

Question 64. Tunnel vision is associated with

  1. Alcoholism
  2. Drug addiction
  3. Smoking
  4. Mental health

Answer: 1. Alcoholism

Not only can general vision be affected by excessive alcohol consumption, but alcohol can also lower peripheral vision sensitivity, creating the sensation of tunnel vision.

Question 65. Chronic use of alcohol can lead to

  1. Hepatitis-b
  2. Cirrhosis
  3. Pneumonia
  4. AIDS

Answer: 2. Cirrhosis

The chronic use of alcohol causes liver cirrhosis, a condition where the liver becomes tawny (orange-brown in colour) and characteristically knobbly (due to the nodules).

Question 66. Dipsomania is

  1. A type of depression
  2. Insanity due to psychosis
  3. Severe addiction to alcohol
  4. Tendency to take much water

Answer: 3. Severe addiction to alcohol

Dipsomania is a historical term to describe a medical condition involving an uncontrollable craving for alcohol.

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Question 67. Assertion (A) Alcohol consumption during pregnancy is harmful. Reason (R) Alcohol causes physical and mental defects in the offspring called Foetal Alcohol Syndrome (FAS).

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true, but R is not the correct explanation of A
  3. A is true, but R is false
  4. Both A and R are false

Answer: 1. Both A and R are true and R is the correct explanation of A

  • Both A and R are true and R is the correct explanation of A. High alcohol consumption can be harmful during pregnancy.
  • Foetal Alcohol Syndrome (FAS) is the name given to a group of physical and mental defects caused by foetal exposure to alcohol in the womb.

Question 68. Warning signs of drug and alcohol abuse in children/adolescents.

  1. Excellence in academic performance.
  2. Absence from school college.
  3. Lack of interest in personal hygiene.
  4. Isolation, depression, fatigue, aggressive and rebellious behaviour.

Codes

  1. 1, 2 and 3
  2. 1, 3 and 4
  3. 2, 3 and 4
  4. 1, 2, 3 and 4

Answer: 3. 2, 3 and 4

  • All the given points are warning signs of drugs and alcohol abuse in children adolescents except statement 1.
  • The most common warning signs of drug and alcohol abuse among youth include drop in academic performance, unexplained absence from school/college, lack of interest in personal hygiene, withdrawal, isolation, depression, fatigue, aggressive and rebellious behaviour, deteriorating relationships with family and friends, loss of interest in hobbies, change in sleeping and eating habits, fluctuations in weight, appetite, etc.

Question 69. The most specific indication in case of cirrhosis of liver cells is the increase in the level of which enzyme?

  1. Co-A
  2. SGPT
  3. LDH
  4. CPK

Answer: 2. SGPT

SGPT stand for Serum Glutamic Pyruvic Transaminase. High levels of SGPT indicate liver damage.

Question 70. Disulfiram (tetraethyl thiuram disulphide) for treatment of alcoholism was introduced by

  1. E Jacobsen
  2. Eithoven
  3. Hill
  4. Yanofsky

Answer: 1. E Jacobsen

  • Disulfiram (trade name: Antabuse) is a drug used to support the treatment of chronic alcoholism by producing an acute sensitivity to ethanol (drinking alcohol).
  • Disulfiram works by inhibiting the enzyme acetaldehyde dehydrogenase, causing many of the effects of a hangover to be felt immediately following alcohol consumption.
  • Erik Jacobsen and Jens Hald accidentally discovered that drinking alcohol while the drug was still in their bodies made them mildly sick.

Question 71. Anaemia in alcoholism may be due to a deficiency of

  1. Vitamin-H
  2. Vitamin-B17
  3. Folic acid and vitamin-B12
  4. Vitamin-C

Answer: 3. Folic acid and vitamin-B12

  • Megaloblastic anaemia has several different causes – deficiencies of either cobalamin (vitamin-B12) or folate (also known as folic acid or vitamin B) are the two most common causes.
  • These vitamins play an essential role in the production of red blood cells. Alcoholics may develop folate deficiency because alcohol does not contain folate and may impair the breakdown (metabolism) of folate in the body.

Question 72. Absorbed alcohol is metabolised in the liver into acetaldehyde by

  1. Aldehyde dehydrogenase
  2. Alcoholic dehydrogenase
  3. Both (1) and (2)
  4. None of the above

Answer: 3. Both (1) and (2)

  • Alcohol is metabolised by several processes or pathways. The most common of these pathways involves two enzymes; Alcohol.
  • Dehydrogenase (ADH) and Aldehyde Dehydrogenase (ALDH).
  • These enzymes help to break apart the alcohol molecule, making it possible to eliminate it from the body.

Question 73. Korsakoffs disease is related to

  1. Alcohol abuse
  2. Drug abuse
  3. Smoking abuse
  4. None of the above

Answer: 1. Alcohol abuse

Korsakoff syndrome is as a result of vitamin (thiamine) deficiency and chronic alcoholism.

Question 74. A poorly nourished alcoholic should receive large doses of _________ to prevent Wernicke’s syndrome.

  1. Mg, K ions
  2. Saline and glucose
  3. Thiamine and other types of vitamin-B
  4. Caffeine

Answer: 3. Thiamine and other types of vitamin-B

  • Wernicke’s syndrome, also known as Wernicke encephalopathy, is a neurological disease characterised by the clinical triad of confusion, the inability to coordinate voluntary movement (ataxia) and eye (ocular) abnormalities.
  • Wernicke-Korsakoff syndrome is a severe memory disorder usually associated with chronic excessive alcohol consumption and deficiency in vitamin-B thiamine.
  • Thus, a poorly nourished alcoholics should receive large doses of vitamin- B or thiamine.

Question 75. In the liver, alcohol is converted into a more toxic substance called

  1. Acetaldehyde
  2. Formaldehyde
  3. Hydrogen cyanide
  4. Methane

Answer: 1. Acetaldehyde

  • Alcohol gets distributed widely in the body and crosses blood barrier efficiently. Some amount of ethanol is excreted directly through the lungs, urine or sweat, but the greater part is metabolised to acetaldehyde in the liver.
  • Acetaldehyde is oxidised to acetate. The specific significance of acetaldehyde is not fully known, but its low levels may cause stimulation and behavioural reinforcement.
  • Accumulation of higher levels in liver, brain or other body tissues may cause organ damage.

NEET Biology Mcq Chapter Wise

Question 76. Consumption of alcohol may lead to

  1. Accumulation of acetaldehyde in liver
  2. Synthesis of fat in liver
  3. Lowering of blood glucose level of the body
  4. All of the above

Answer: 4. All of the above

  • Consumption of alcohol may have disastrous effects on body. Alcohol reduces gluconeogenesis. In the period between 6-36 hours of intake of alcohol, the blood has lesser amount of glucose.
  • Also, the liver synthesises fat from alcohol and some it gets metabolised to acetaldehyde.

Question 77. In chronic alcoholism, the liver is damaged due to

  1. Liver destruction
  2. Degradation of metabolites
  3. More urea formation
  4. Deposition of fats

Answer: 4. Deposition of fats

  • The most important organ which is damaged by alcohol is the liver. The liver is the storehouse of glycogen, but alcohol causes the storage of fat in the liver.
  • It causes fatty liver syndrome. Gradually, the liver hardens and dries up as its cells are replaced by a fibrous tissue. This kind of liver degeneration is called cirrhosis.
  • Once the liver is damaged, it affects the other organs of the body also.

Question 78. Assertion (A) Alcohol acts as diuretic. Reason (R) Sweating is enhanced by alcohol and so it is endothermic.

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
  3. A is true, but R is false.
  4. Both A and R are false.

Answer: 3. A is true, but R is false.

  • A is true, but R is false and Reason can be corrected as Alcohol is a diuretic. Drinking alcohol inhibits the body’s release of the hormone vasopressin or Anti-Diuretic Hormone (ADH).
  • Typically, the brain signals the release of ADH in response to an increase in plasma osmolality. The ADH signals kidneys to hold on to water. By suppressing
  • ADH, alcohol can make the kidneys release more water. This can have a dehydrating effect on body. Due to this, sweating is diminished or does not occur at all.

Question 79. Addiction to smoking is harmful as smoke produces polycyclic aromatic hydrocarbons, that

  1. Reduces oxygen transport
  2. Increases blood pressure
  3. Causes cancer
  4. Retards growth of foetus

Answer: 3. Causes cancer

Various substances and industrial processes, surrogates of exposure to Polycyclic Aromatic Hydrocarbons (PAHs), are currently classified as human carcinogens. The cancer-causing agents are called carcinogens.

NEET Biology Mcq Chapter Wise

Question 80. Cigarette smoke contains the carcinogen

  1. N-nitroso dimethylamine
  2. Aflatoxin
  3. Vinyl chloride
  4. Diethylstilbestrol

Answer: 1. N-nitroso dimethylamine

N-nitroso dimethylamine present in cigarette smoke affects the lungs.

Question 81. Smoking is harmful as it produces polyaromatic hydrocarbon which causes

  1. Excitement
  2. Stimulations of brain
  3. Lung cancer and emphysema
  4. Depression

Answer: 3. Lung cancer and emphysema

Smoking is associated with increased incidence of cancers of the lung, urinary bladder and throat, bronchitis, emphysema, coronary heart disease, gastric ulcer, etc.

Question 82. In heavy smokers, the alveoli of the lungs are enlarged and damaged, which reduces the surface area for the exchange of respiratory gases. This condition is called

  1. Asthma
  2. Silicosis
  3. Emphysema
  4. Insomnia
  5. Bronchitis

Answer: 3. Insomnia

Emphysema is a type of Chronic Obstructive Pulmonary Disease (COPD) involving damage to the air sacs (alveoli) in the lungs.

Question 83. Nicotine, the main alkaloid in tobacco is synthesised in plants by

  1. Stump
  2. Leaves
  3. Roots
  4. All of these

Answer: 3. Roots

Nicotine synthesis occurs in roots by the uptake of nitrogen.

Question 84. Nicotine is

  1. An alkaloid
  2. Steroid
  3. Stimulant
  4. Barbiturates

Answer: 1. An alkaloid

  • Tobacco contains large number of chemical substances including nicotine which is an alkaloid.
  • Nicotine stimulates the adrenal gland to release adrenaline and nor-adrenaline into blood circulation, both of which raise blood pressure and increase the heart rate.

Question 85. Bidi is made by

  1. Tobacco leaves
  2. Leaves of the chinensis
  3. Leaves of tendu, diospyros melanoxylon
  4. Leaves of ficus elastica

Answer: 3. Leaves of tendu, diospyros melanoxylon

A beedi (also spelt bidi or biri) is a thin cigarette or mini-cigar filled with tobacco flake and commonly wrapped in a Tendu (Diospyros melanoxylon) or Piliostigma racemosum leaf tied with a string or adhesive at one end. It originates from the Indian subcontinent.

NEET Biology Mcq Chapter Wise

Question 86. Smokeless tobacco causes

  1. Oral cancer
  2. Lung cancer
  3. Bronchitis
  4. Blood cancer

Answer: 1. Oral cancer

Chewing of tobacco causes oral cancer, which becomes fatal in extreme conditions.

Question 87. Smokers metabolise nicotine to

  1. Uric acid
  2. Urea
  3. Cotinine
  4. All of these

Answer: 3. Cotinine

Although on average, about 70-80% of nicotine is metabolised, via. the cotinine pathway in humans, only 10-15% of nicotine absorbed by smokers appears in the urine as unchanged cotinine (an alkaloid).

Question 88. Smoking causes many types of cancers including ___________ cancer.

  1. Lung
  2. Urinary bladder
  3. Throat
  4. All of these

Answer: 4. All of these

  • Smoking is associated with increased incidence of cancers of the lung, urinary bladder and throat, bronchitis, emphysema, coronary heart disease, gastric ulcer, etc.
  • Tobacco chewing is associated with an increased risk of cancer of the oral cavity.

Question 89. Most of the carcinogenic part of tobacco smoke is

  1. Tar
  2. Nicotine
  3. Filter
  4. Benzopyrene

Answer: 4. Benzopyrene

Benzopyrene is the most carcinogenic part present in tobacco smoke.

Question 90. Assertion (A) Smoking causes oxygen deficiency in the body. Reason (R) Carbon monoxide when inhaled while smoking, combines with haemoglobin to form a chemically stable compound.

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true, but R is not the correct explanation of A
  3. A is true, but R is false
  4. Both A and R are false

Answer: 1. Both A and R are true and R is the correct explanation of A

Both A and R are true and R is the correct explanation of A. Smoking causes oxygen deficiency in the body because carbon monoxide when inhaled while smoking, combines with haemoglobin to form a chemically stable compound.

Question 91. Building up of ___________ is observed as a result of smoking which reduces the ____________ availability to the tissues.

  1. Carbon dioxide, carbon monoxide
  2. Carbon dioxide, oxygen
  3. Carbon monoxide, oxygen
  4. Oxygen, carbon monoxide

Answer: 3. Carbon monoxide, oxygen

Smoking increases carbon monoxide (CO) content in the blood and reduces the concentration of haem bound oxygen. This causes oxygen deficiency in the body tissues.

Question 92. Tobacco protein-induced arteriosclerotic disease is

  1. Aneurysm
  2. Polyarteritis nodosa
  3. Thromboangiitis obliterans
  4. DVT

Answer: 3. Thromboangiitis obliterans

The tobacco protein-induced arteriosclerotic disease is thromboangiitis obliterans, which causes thrombotic occlusion of distal lower limb vessels. It occurs in young males especially using cigars. It leads to ischemia or gangrene of the feet.

Question 93. Consumption of coffee, i.e. one cup of instant coffee will contribute about 60-100 mg of caffeine which is a

  1. Sedative
  2. Antidepressant
  3. Stimulant
  4. Psychedelic

Answer: 3. Stimulant

  • Caffeine is a stimulant drug that acts on the brain and nervous system.
  • Like many other drugs, it is possible to become dependent on caffeine. Pregnant women, athletes and children should limit their intake of caffeine.
  • Energy drinks typically have more caffeine and sugar than soft drinks.

NEET Biology Mcq Chapter Wise

Question 94. Which part of coffee plant gives caffeine?

  1. Roots
  2. Shoots
  3. Seeds
  4. Leaves

Answer: 3. Seeds

A coffee bean is a seed of the coffee plant and the source of caffeine.

Question 95. Which one is the mildest stimulant?

  1. Tea
  2. Amphetamine
  3. Cocaine
  4. Tobacco

Answer: 1. Tea

The average cup of tea contains less than 200 mg/day of caffeine and not associated with health risk.

Question 96. ‘Golden triangle’ and ‘Golden crescent’ is famous for

  1. Gold
  2. Poppy
  3. Ships
  4. Cocaine

Answer: 2. Poppy

The largest quantities of poppy or opium come from three areas of the world: the Golden Triangle (Laos, Burma, Thailand), the Golden Crescent (Afghanistan, Pakistan and Iran) and Mexico.

Question 97. Sportspersons are frequently accused of abusing the drug known as

  1. Morphine
  2. Cocaine
  3. Heroin
  4. Amphetamine

Answer: 4. Amphetamine

  • Amphetamines are synthetic drugs that are commonly abused by sports person. They are commonly called pep pills, anti-sleep drugs or supermen pills as they are CNS stimulants.
  • They cause alertness, self-confidence, talkativeness and increased work capacity, stimulated respiratory centre, postponement of sleep and increased wakefulness.

Question 98. Which one of the following is the correct statement regarding the particular psychotropic drug specified?

  1. Hashish causes afterthought perceptions and hallucinations
  2. Opium stimulates the nervous system and causes hallucinations
  3. Morphine leads to delusions and disturbed emotions
  4. Barbiturates cause relaxation and temporary euphoria

Answer: 1. Hashish causes afterthought perceptions and hallucinations

Hashish causes after-thought perceptions and hallucinations. Hashish is a preparation of Cannabis composed of the compressed trichomes collected from the Cannabis plant.

Question 99. Initial stage of drug addiction is

  1. Tolerance
  2. Habituation
  3. Sleep
  4. Dependence

Answer: 2. Habituation

Habituation is a condition due to repeated consumption of a drug with a desire to continue its use but with little or no tendency to increase the dose. Thus, it is the initial stage of drug addiction.

Question 100. Every time, a dosage of a drug has to be increased to achieve the same ‘kick’ that initially occurred in response to a smaller dose, this condition is known as

  1. Rebound effect
  2. Tolerance
  3. Withdrawal symptoms
  4. Addiction

Answer: 2. Tolerance

  • Tolerance is the reduction or loss of the normal response to a drug or other substance that usually provokes a reaction in the body. Drug tolerance may develop after taking a particular drug over a long period of time.
  • In such cases increased doses are necessary to produce the desired effect. Some drugs that cause tolerance also cause dependency.

Question 101. Assertion (A) Good athletes take amphetamine. Reason (R) Amphetamine brings increase activity and alertness.

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true but R is not the correct explanation of A
  3. A is false, but R is true
  4. Both A and R are false

Answer: 3. A is false, but R is true

A is false, but R is true, Assertion can be corrected as Athletes take illegal amphetamines for a number of reasons, including to enhance performance and to lose weight. Good athletes would not follow such illegal practices.

Question 102. Withdrawal symptoms of drug addiction are

  1. Showed during epilepsy
  2. Unpleasant symptoms showed due to the non-availability of addictive drugs
  3. Unpleasant symptoms showed due to alcoholism
  4. Unpleasant symptoms showed due to narcotic drugs

Answer: 2. Unpleasant symptoms shown due to non-availability of addictive drugs

  • Withdrawal symptoms are physical and psychological disturbances which appear in an addict when they do not take the needed dosages of drugs, alcohol or tobacco.
  • Their behaviour changes and they loose self-control, it results in unpleasant symptoms. Thus, non-availability of drugs causes unpleasant symptoms.

Question 103. Assertion (A) Cocaine is a good local anaesthetic. Reason (R) It delays fatigue.

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true, but R is not the correct explanation of A
  3. A is true, but R is false
  4. Both A and R are false

Answer: 2. Both A and R are true, but R is not the correct explanation of A

  • Both A and R are true, but R is not the correct explanation of A.
  • Cocaine is a good local anaesthetic because it inhibits excitation of nerve endings or block conduction in peripheral nerves.
  • Cocaine withdrawal symptoms include fatigue, depression and agitation.

Question 104. Psychotropic drugs are also called

  1. Narcotics
  2. Mood altering drugs
  3. Hallucinogens
  4. All of the above

Answer: 2. Mood-altering drugs

  • Any drug capable of affecting the mind, emotions and behaviour. Some legal drugs, such as lithium for bipolar disorder, are psychotropic.
  • Many illicit drugs, such as cocaine, are also psychotropic. It is also known as a psychodynamic (mood-altering) drug.

Question 105. Match Column 1 with Column 2 and choose the correct answer from the codes given below.

NEET Biology Drugs And Drug Abuse MCQs Question 105 Match The Column

Answer: A–3, B–1, C–4, D–2

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