Cell Structure and Function MCQ with Answers | Cell the unit of life NEET Questions
1. Lysosomes are the
(a) digestive centres
(b) respiratory centres
(c) excretory centres
(d) energy centres
Ans. a
2. Electron transport system is located in
(a) mitochondrial matrix
(b) cytosol
(c) cristae
(d) All of these
Ans. a
3. The acrosome of the sperm is formed from the
(a) mitochondria
(b) centrosome
(c) lysosome
(d) Golgi bodies
Ans. d
4. The percentage amount of integral protein of plasma membrane is
(a) 40%
(b) 50%
(c) 60%
(d) 70%
Ans. d
5. Oligosaccharide are usually attached to the extrinsic phase of plasma membrane by
(a) proteins
(b) lipids
(c) Both (a) and (b)
(d) Not specific
Ans. c
6. The internal skeleton of a cell is composed of
(a) microtubules, intermediate filaments and microfilaments
(b) cellulose and intermediate filaments
(c) cellulose, microtubules and centrioles
(d) microfilaments
Ans. a
7. Select the correct statement concerning membrane
(a) carbohydrates are only tfound associated with the membranes of prokaryotic cells
(b) glucose is the most abundant membrane carbohydrate
(c) cell membranes consist of protein and phospholipid carbohydrate is not a membrane component
(d) membrane carbohydrates function primarily in cell-cell recognition
Ans. d
8. Collagens are
(a) high in glycine, hydroxylysine and hydroxyproline content
(b) the most abundant proteins in vertebrates
(c) the most abundant component of the extracellular matrix in animals
(d) All of the above
Ans. d
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9. The ECM of animals, consists of which three classes of molecules?
(a) Protein polysaccharides, structural proteins microtubules
(b) Structural proteins, lipid bilayers, adhesive glycoproteins
(c) Lipoproteins, polysaccharides and adhesive glycoproteins
(d) Structural proteins, protein polysaccharides, adhesive and glycoproteins
Ans. d
10. The fluid mosaic model of plasma membrane given by Singer and Nicolson is applicable to
(a) only prokaryotic membrane
(b) only eukaryotic membrane
(c) Both (a) and (b)
(d) only to organelle membranes
Ans. c
11. In the Krebs’ cycle, the electrons move from NADH to
(a) FADH2
(b) pyruvate
(c) ethanol
(d) oxygen
Ans. a
12. Type of lipid generally contained in biomembrane are
(a) lecithin
(b) cephalin
(c) cholesteral
(d) All of these
Ans. d
13. Which of the following is not true for the nuclear envelopet
(a) The nuclear envelope is exactly like other cellular membranes
(b) The nuclear envelope separates the genetic material the cytoplasm
(c) The nuclear envelope is a pair of concentric membranes
(d) The nuclear enveiope is studded with pores
Ans. a
14. Organelle that lacks the property of self-replicating.
(a) Centriole
(b) Mitochondria
(c) Ribosome
(d) Plastid
Ans. c
15. Which cellular organelle functions in ribosome synthesis
(a) Endoplasmic reticulum
(b) Nucleolus
(c) Nucleus
(d) Golgi bodies
Ans. b
16. The centriole/centrosome takes part in.
(a) nucleus formation
(b) start of cell division
(c) cell plate formation
(d) spindle formation
Ans. d
17. Golgi vesicles are move towards
(a) concave side
(b) convex side
(c) equally distributed
(d) None of these
Ans. a
18. Which of the following show selective permeability?
(a) Cell membrane
(b) Cytoplasm
(c) Cell wall
(d) Protoplasm
Ans. a
19. Granules of nucleolus are precursor of
(a) RNA
(b) ribosome
(c) lysosome
(d) chromosome
Ans. b
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20. In muscle cells the .. is specialised for the storage and release of calcium.
(a) smooth ER
(b) Golgi apparatus
(c) contractile vacuoles
(d) rough ER
Ans. a
21. Cytochrome oxidase and cytochrome-c deficiency in mitochondria causes.
(a) Menke’s disease
(b) Kearns-Sayre syndrome and Menke’s disease
(c) Kearns-Sayre syndrome
(d) Leber’s optic neuropathy
Ans. b
22. Photophosphorylation occurs in
(a) plastids
(b) mitochondria
(c) cytoplasm
(d) cell membrane
Ans. a
23. In the plasma membrane the functional as well structural role is played by
(a) proteins
(b) lipids
(c) cholesterol
(d) oligosaccharides
Ans. a
24. The middle lamella of plant cells is made up of calcium magnesium pectate. Pectic acid is polymer of
(a) alpha-1, 4 D-glucose
(b) alpha-1, 6D glucose
(c) alpha-1, 4 D-galactouronic acid
(d) None of the above
Ans. c
25. Which of the following would not be considered part of cell’s cytoplasm?
(a) A ribosome
(b) The nucleus
(c) A mitochondrion
(d) A microtubule
Ans. b
26. Components of 70 S ribosomes are
(a) 50 S and 30S
(b) 50 S and 20 S
(c) 40 S and 40S
(d) 40 S and 3O S
Ans. a
27. A non-living structure of cell is
(a) cell wall
(b) plasma membrane
(c) cytoplasm
(d) nucleus
Ans. a
28. Cell organelle devoid of DNA is
(a) ribosomes
(b) nucleus
(c) plastid
(d) mitochondria
Ans. a
29. The another name for ribosome is
(a) microsome
(b) RNA particle
(c) dictyosome
(d) oxisome
Ans. b
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30. Organelle found in both prokaryotes and eukaryotes
(a) mitochondria
(b) ribosome
(c) nucleoli
(d) plastids
Ans. b
31. The smallest cell of human body is known to be
(a) WBC
(b) RBC
(c) nerve cell
(d) egg cell
Ans. b
32. Identify the cell organelle which is not found in human cell
(a) ribosome
(b) mitochondria
(c) centriole
(d) mesosome
Ans. d
33. The smallest known living cell till now are
(a) mycoplasma
(b) blue-green algae
(c) RBC
(d) nerve cell
Ans. a
34. In enkaryotic cells, the cellular organelles are found to be embedded in
(a) protoplasm
(b) cytosol
(c) cytoplasm
(d) nucleoplasm
Ans. b
35. In a typical eukaryotic cell, the region between nucleus and plasma mambrane is known as
(a) lumen
(b) cytoplasm
(c) karyoplasm
(d) nucleoplasm
Ans. b
36. What does the flagella of bacteria possess?
(a) Tubulin protein
(b) 9 + 2 arrangement of microtubules
(c) Single unit of flagollin protein
(d) 9+0 arrangerment of microtubules
Ans. c
37. Which of the following has a covered nuclear material?
(a) Bacteria and tungi only
(b) Plant cell
(c) Mycoplasma
(d) Bacteria and blue-green algae
Ans. b
38. In bacteria, mitochondria is substituted by
(a) ribosome
(b) nucleoid
(c) Golgi bodies
(d) cell membrane and mesosome
Ans. d
39. In addition to the cellulose, cell wall of bacteria contains
(a) glycoproteins
(b) muramic acid
(c) oligosaccharide
(d) lipoproteins
Ans. b
40. The word prokaryote denotes
(a) with many nucleus
(b) with one nucleus
(c) with diffused nucieus
(d) without chloroplast
Ans. c
Cell structure and function class 8 mcq
41. Identify the statement which is correct for the animal cells.
(a) They lack cell wall
(b) They have an independent structure
(c) They have definite structure
(d) They can never have chloroplast
Ans. c
43. DNA along with the histonic protenis is considered as the genetic material found in
(a) plastid
(b) eukaryotes
(c) E coli
(d) mitochondria
Ans. a
44. Basic function of cell membrane contributes in
(a) regulating the flow of material into and outside the cell
(b) maintaining the cell shape and size
(c) controlling all cellular activities
(d) storing cel material
Ans. a
45. Model known as fluid mosaic has similarity to the Roberts on model in
(a) arrangement of lipids
(b) arrangement of proteins
(c) number of protein layers
(d) the presence of glycoproteins
Ans. b
46. Which of the following denotes the elasticity of biomembrane in animal cells?
(a) Extrinsic protein
(b) Intrinsic proteins
(c) Carbohydrates
(d) Lipids
Ans. d
47. The complex formed by the linkage of carbohydrates in the membrane with lipids is
(a) glycolipid
(b) sphingolipid
(c) phospholipid
(d) cholesterol
Ans. a
48. ‘Protein iceberg in the sea of lipid’. This statement was used for
(a) unit membrane model
(b) sandwitch model
(c) fluid mosaic model
(d) Danielle model
Ans. c
49. Which of the organelle is/are not membrane bounds?
(a) Ribosome
(b) Nucleolus
(c) Centriole
(d) All of these
Ans. d
50. What will happen if any part of a cell membrane gets damaged?
(a) Cell will die due to starvation
(b) New plasma membrane will start growing
(c) Exchange of material will get stopped
(d) None of the above
Ans. b
51. ER is absent in all except
(a) prokaryotes
(b) liver cells
(c) mature RBCS
(d) embryonic cells
Ans. b
52. Name the substance that fails to pass across the cell membrane by simple diffusion.
(a) CO2
(b) H20
(c) O2
(d) H+
Ans. d
53. Golgi complex originates from
(a) nuclear membrane
(b) cell plate
(c) ribosome
(d) ER
Ans. d
54. What is the common between chloroplasts, chromoni and leucoplasts?
(a) The presence of pigments
(b) Possession of thylakoids and grana
(c) Storage of strach, proteins and lipid
(d) Ability to multiply by a fission-like process
Ans. d
55. Which of the following subunit of ribosome is compose of 23 S FRNA and a 5 S FRNA and 32 different proteins?
(a) 50 S
(b) 70 S
(c) 30 S
(d) 60 S
Ans. a
56. Fat is stored in the plant cell in
(a) lysosome
(b) peroxisome
(c) sphaerosome
(d) microsome
Ans. c
57. The membrane around the vacuole is called
(a) vacuoplast
(b) leucoplast
(c) cytoplast
(d) tonoplast
Ans. d
58. Structure of nuclear envelope facilitates:
(a) spindle organisation
(b) separation of daughter chromosome
(c) synapsis of homologous chromosome
(d) nucleocytoplasmic exchange of materials
Ans. d
59. Which of the following phenomena is commonly referred as ‘cell drinking’?
(a) Pinocytosis
(b) Exocytosis
(c) Endocytosis
(d) Phagocytosis
Ans. a
60. Which of the following is not a connection between plasma membrane of adjacent cell?
(a) Desmosome
(b) Tight junction
(c) Gap junction
(d) Transverse junction
Ans. d
