Cell The Unit Of Life Multiple Choice Question And Answers

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Cell The Unit Of Life Multiple Choice Questions

Question 1. Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP-

  1. Ribosome
  2. Chloroplast
  3. Mitochondrion
  4. Lysosome

Answer: 3. Mitochondrion

Question 2. Which of the following components provides a sticky character to the bacterial cell—

  1. Nuclear membrane
  2. Plasma membrane
  3. Glycocalyx
  4. Cell wall

Answer: 3. Glycocalyx

Question 3. Microtubules are the constituents of—

  1. Spindle fibers, centrioles, and cilia
  2. Centrioles, spindle fibres, and chromatin
  3. Centrosomes, nucleosomes, and centrioles
  4. Cilia, flagella, and peroxisomes

Answer: 1. Spindle fibers, centrioles, and cilia

Question 4. Which of the following cell organelles is enclosed by a single membrane?

  1. Chloroplasts
  2. Lysosomes
  3. Nuclei
  4. Mitochondria

Answer: 2.  Lysosomes

Question 5. A cell organelle containing hydrolytic enzyme is—

  1. Lysosome
  2. Microsome
  3. Ribosome
  4. Mesosome

Answer: 1. Lysosome

Question 6. Which of the following structures is not found in prokaryotic cells?

  1. Plasma membrane
  2. Nuclear envelope
  3. Ribosome
  4. Mesosome

Answer: 2. Nuclear envelope

Question 7. Which of the following are not membrane-bound?

  1. Mesosomes
  2. Vacuoles
  3. Ribosomes
  4. Lysosomes

Answer: 3. Ribosomes

Question 8. Cellular organelles with membranes are—.

  1. Lysosomes, Golgi apparatus, and mitochondria
  2. Nuclei, ribosomes, and mitochondria
  3. Chromosomes, ribosomes, and endoplasmic reticulum
  4. Endoplasmic reticulum, ribosomes and nuclei

Answer: 1.  Lysosomes, Golgi apparatus, and mitochondria

Question 9. A protoplast is a cell—

  1. Without division
  2. Without plasma membrane
  3. Without nucleus
  4. Undergoing division

Answer: 1.  Without division

Question 10. The function of the gap junction is to—

  1. Stop substances from leaking across a tissue
  2. Performing cementing to keep neighboring cells together
  3. Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules, and some large molecules
  4. Separate two cells from each other

Answer: 3. Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules, and some large molecules

Question 11. Chromatophores take part in—

  1. Respiration
  2. Photosynthesis
  3. Growth
  4. Movement

Answer: 2. Photosynthesis

Question 12. Match the columns and identify the correct option—

Biology Class 11 Chapter 8 Cell The Unit Of Life Match The Following Question 12

Answer: 3. 

Question 13. Which structure performs the function of mitochondria in bacteria?

  1. Nucleoid
  2. Ribosomes
  3. Cell wall
  4. Mesosomes

Answer: 4. Mesosomes

Question 14. Match the following columns

Biology Class 11 Chapter 8 Cell The Unit Of Life Match The Following Question 13

  1. 1-4,2-2,3-1,4-3
  2. 1-1,2-2,3-4,4-3
  3. 1-1,2-3,3-2,4-4
  4. 1-4,2-3,3-1,4-2

Answer: 

Question 15. The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as—

  1. Microtubules
  2. Microfilaments
  3. Intermediate filaments
  4. Lamins

Answer: 2. Microfilaments

Question 16. The osmotic expansion of a cell kept in water is chiefly regulated by—

  1. Mitochondria
  2. Vacuoles
  3. Plastids
  4. Ribosomes

Answer: 2. Vacuoles

Question 17. The component of bacteria that retains the crystal violet stain during gram staining is—

  1. O antigen
  2. Lipopolysaccharide
  3. Peptidoglycan
  4. Cytoplasmic membrane

Answer: 3. Peptidoglycan

Question 18. Which of the following is always absent in prokaryotic cells?

  1. Ribosome
  2. Mitochondria
  3. Dma
  4. Cell wall

Answer: 2. Mitochondria

Question 19. Which one of the following bacteria is observed as a chain-like formation?

  1. Escherichia coli
  2. Bacillus subtilis
  3. Streptococcus pyogenes
  4. Micrococcus flavus

Answer: 3. Streptococcus pyogenes

Question 20. The primary cell wall is mainly made up of—

  1. Lignin
  2. Pectin
  3. Cellulose
  4. Protein

Answer: 3. Cellulose

Question 21. The chromosome with centromere near the end is called—

  1. Acrocentric
  2. Metacentric
  3. Sub-metacentric
  4. Telocentric

Answer: 1. Acrocentric

Question 22. Choose the correctly matched ones.

  1. Vibrio—rod-like bacteria
  2. Mesosome—helps in cell wall formation
  3. Smooth endoplasmic reticulum—synthesis of lipid
  4. Vacuoles—rich in hydrolytic enzymes

Choose The Correct Option 

  1. 2 And 3
  2. 1 And 4
  3. 1 And 3
  4. 2, 3 And 4
  5. 1, 3 And 4

Answer: 1. 2 And 3

Question 23. Which of these organelles does not contain ribosomes?

  1. Rough endoplasmic reticulum
  2. Chloroplast
  3. Golgi apparatus
  4. Mitochondria

Choose The Correct Option 

  1. 1 And 2
  2. 1 And 4
  3. Only 4
  4. Only 3
  5. 2, 3 And 4

Answer: 4. Only 3

Question 24. One type of chromosome has a middle centromere, whereas the other has terminal centromeres. They are—

  1. Metacentric and acrocentric
  2. Metacentric and telocentric
  3. Sub-metacentric and telocentric
  4. Telocentric and acrocentric
  5. Acrocentric and metacentric

Answer: 2. Metacentric and telocentric

Question 25. Which of the following statements is correct?

  1. Elaioplasts store starch, whereas aleuroplasts store proteins
  2. Acrocentric chromosomes have only one arm
  3. The core of the cilium or flagellum is the basal body
  4. Membranous extensions into the cytoplasm in cyanobacteria which contain pigments are called chromatophores

Answer: 4. Membranous extensions into the cytoplasm in cyanobacteria which contain pigments are called chromatophores

Question 26. The Golgi complex plays a major role—

  1. In trapping the light and transforming it into chemical energy
  2. In digesting proteins and carbohydrates
  3. As energy-transforming organelles
  4. In post-translational modification of proteins and glycosidation of lipids

Answer: 4. In post-translational modification of proteins and glycosidation of lipids

Question 27. Which one of the following organelles in the figure correctly matches its function?

Biology Class 11 Chapter 8 Cell The Unit Of Life Multiple Choice Question 27

  1. Rough endoplasmic reticulum, formation of glycoproteins
  2. Golgi apparatus, protein synthesis
  3. Golgi apparatus, formation of glycolipids
  4. Rough endoplasmic reticulum, protein synthesis

Answer: 4. Rough endoplasmic reticulum, protein synthesis

Question 28. A major site for the synthesis of lipids is—

  1. Rer
  2. Symplast
  3. Nucleoplasm

Answer: 2. Symplast

Question 29. Match the following columns:

Biology Class 11 Chapter 8 Cell The Unit Of Life Match The Following Question 29

  1. 1-4,2-5,3-1,4-2
  2. 1-5,2-4,3-2,4-2
  3. 1-3,2-1,3-2,4-4
  4. 1-2,2-3,3-5,4-1

Answer: 3. 1-3,2-1,3-2,4-4

Question 30. Which one of the following does not differ in e. Coli and chlamydomonas?

  1. Ribosomes
  2. Chromosomal organization
  3. Cell wall
  4. Cell membrane

Answer: 4. Cell membrane

Question 31. N-acetyl muramic acid is found in—

  1. Cell wall component of plant
  2. Cell wall component of gram-positive bacteria
  3. Cell wall component of fungal coat material
  4. Viral coat material

Answer: 2. Cell wall component of gram-positive bacteria

Question 32. Identify the bacterium that appears violet

  1. Gram staining—
  2. Salmonella enterica
  3. Escherichia coli
  4. Mycobacterium tuberculosis
  5. Rhizobium meliloti

Answer: 3. Escherichia coli

Question 33. Which of the cell organelles lacks a membrane?

  1. Mesosome
  2. Ribosome
  3. Mitochondria
  4. Liposome

Answer: 3. Mitochondria

Question 34. Which one of the following also acts as a catalyst in a bacterial cell?

  1. Snrna
  2. 23S rRNA
  3. Hnrna
  4. 5S rRNA

Answer: 3. Hnrna

Question 35. The cell theory is not applicable to—

  1. Algae
  2. Fungi
  3. Viruses
  4. Lichens

Answer: 3. Viruses

Question 36. Robert Hooke used the term ‘cell’ in the year—

  1. 1650
  2. 1665
  3. 1865
  4. 1960

Answer: 2. 1665

Question 37. Plant cells normally lack—

  1. Ribosomes
  2. Golgi bodies
  3. Centrioles
  4. Cell membrane

Answer: 3. Centrioles

Question 38. The detailed structure of the membrane was studied after the advent of the electron microscope during—

  1. 1930S
  2. 1950S
  3. 1970S
  4. 1990S

Answer: 2. 1950s

Question 39. Tonoplast is the membrane covering of—

  1. Vacuole
  2. Mitochondria
  3. Chloroplast
  4. Lysosome

Answer: 1. Vacuole

Question 40. Mitochondria will be found in abundance in cells of tissues having—

  1. Minimum activity
  2. Average activity
  3. Maximum activity
  4. None of these

Answer: 3. Maximum activity

Question 41. The types of ribosomes found in prokaryotic cells are—

  1. 100S
  2. 80S
  3. 60S
  4. 70S

Answer: 3. 60s

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