Cell - the unit of life 1000+ MCQ with answer for SSC JE

1. Which of the following pair are correctly matched.
A. Microtubules Structural components of cilia
B. Centrioles Store hydrolytic enzymes
C. Amyloplasts Store oil protein and starch in plants
A. A, B and C
B. A and B
C. A
D. A and C
Answer : C

2. The best material for study of structure of cell membrane is
A. RBC of human
B. RBC of frog
C. cheek cell of human
D. liver cell of rat
Answer : A

3. Consider the following statements and choose the correct statement.

1. The endomembrane system includes mitochondria, chloroplast and peroxisomes.
2. Smooth endoplasmic reticulum is the major site for synthesis of lipid.
3. Rough endoplasmic reticulum is actively involved in protein synthesis.
4. Mitochondrial matrix possesses single circular DNA, a few RNA and 80S ribosomes. Of the above statements.

A. (i) and (iii)
B. (ii) and (iv)
C. (iii) and (iv)
D. (ii) and (iii)
Answer : D

4. The best way to identify a cell as either prokaryotic or eukaryotic is to determine whether
A. it came from a single-celled or multicellular organism.
B. it has a nucleus.
C. it has a plasma membrane.
D. it has cytosol.
Answer : A

5. A student placed two cells in the same solution in two different containers. The observation was given in the table.

Container	Observation
1	Cell burst
2	Cell does not change its shape

Which structure maintains the shape of the cell present in container 2 and provides the most significant difference between the two cells?
A. Nucleus
B. Cell wall
C. Chloroplast
D. Cell membrane
Answer : B

6. You are asked to examine a cell using a powerful light microscope. The image you see has a clearly defined nucleus and mitochondria. It also has a large central vacuole and chloroplasts. From what group of organisms did this cell most likely come?
A. Bacteria
B. Protists
C. Fungi
D. Plants
Answer : D

7. Which of the following statements are incorrect ?

1. Plant cells have centrioles which are absent in almost all animal cells.
2. Ribosomes are the site of protein synthesis.
3. The middle lamella is a layer mainly of calcium carbonate which holds the different neighbouring cells together.
4. In animal cell, steroidal hormones are synthesized by smooth endoplasmic reticulum. Of the above statements

A. (i) and (iii)
B. (iii) and (iv)
C. (ii) and (iv)
D. (i) and (iv)
Answer : A

8. Which of the following organelles is directly connected to the outer membrane of the nucleus in a eukaryotic cell?
A. Mitochondrion
B. Lysosome
C. Golgi apparatus
D. Endoplasmic reticulum
Answer : D

9.
Which function is carried out by the cell organelle 'X'?
A. helps control the movement of substance in and out of the cell
B. passes information from the parent cell to newly formed cell
C. maintains the proper shape of the cell and serves as a protective barrier
D. helps the cell to make food with the help of chlorophyll and sunlight
Answer : A

10. Match column-I with column-II and choose the correct option.

Column-I	Column-II
A. Tonoplast	I. Contain digestive enzyme
B. Contractile vacuole	II. Store metabolic gases
C. Food vacuole	III. Excretion
D. Air vacuole	IV. Transport of ions in plants

A. A IV; B III; C I; D II
B. A II; B III; C IV; D I
C. A IV; B II; C III; D I
D. A I; B III; C II; D IV
Answer : A

11. The diagram given below represent a filuid mosaic model of plasma membrance. Match the components marked as A, B, C, D and E in the diagram below from the list (i) to (vii).

1. Sugar
2. Protein
3. Lipid bilayer
4. Integral protein
5. Cytoplasm
6. Cell wall
7. External protein

A. A - (i), B - (ii), C - (iii), D - (iv), E - (v)
B. A - (ii), B - (i), C - (iii), D - (iv), E - (v)
C. A - (i), B - (ii), C - (iii), D - (iv), E - (vi)
D. A - (i), B - (ii), C - (iii), D - (vii), E - (v)
Answer : A

12. Polysome is a chain of
A. oxysomes
B. sphaerosomes
C. ribosomes
D. dictyosomes
Answer : C

13. Which of the following pair are correctly matched ?
(I) Amyloplasts Store proteins
(II) Mitochondrion Power house of the cell
(III) Stroma Chlorophyll pigment
(IV) Axoneme 9 + 2 array
A. (I) and (III) only
B. (II), (III) and (IV) only
C. (III) and (IV) only
D. (II) and (IV) only
Answer : D

14.
Which cellular structure helps in transferring genetic information from one generation to another?
A. W
B. X
C. Y
D. Z
Answer : C

15. Microtubules are absent in
A. mitochondria
B. centriole
C. flagella
D. spindle fibres
Answer : A

16 The cytoskeleton is a proteinaceous network of fibres in the cytoplasm. It is involved in
A. mechanical support.
B. motility.
C. maintenace of cell-shape.
D. all of the above
Answer : D

17. Match the items given in column-I with their role given in column-II and choose the correct option.

Column-I	Column-II
A. SER	I. Increase the surface area
B. Golgi apparatus	II. Store oils or fats
C. Cristae	III. Excretion
D. Peroxisome	IV. Photorespiration
E. Elaioplasts	V. Synthesis of lipid

A. A V; B III; C I; D IV; E II
B. A V; B III: C II; D IV; E I
C. A II; B III; C I; D IV; E V
D. A III; B IV; C I; D V; E II
Answer : A

18. Both the membranes of mitochondrion are
A. structurally different but functionally similar.
B. structurally as well as functionally different.
C. structurally similar but functionally different.
D. structurally different but functionally similar.
Answer : B

19. The lipid component of the membrane mainly consists of __________.
A. polysaccharides
B. phosphoglyceride
C. monosaccharaides
D. both (a) and (c)
Answer : B

20. According to widely accepted fluid mosaic model cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?
A. Proteins in cell membranes can travel within the lipid bilayer.
B. Proteins can also undergo flip-flop movements in the lipid bilayer.
C. Proteins can remain confined within certain domains of the membrane.
D. Many proteins remain completely embedded within the lipid bilayer.
Answer : B

21. Extension of plasma membrane in prokaryotic cell is
A. mesosome
B. haploid
C. ribosome
D. none of these
Answer : A

22. Select the correct match of the types of neuron present in column I with its location given in column II.

Column I	Column II
A. Centrioles	(i) Non-membrane bound organelle which helps in cell division
B. Fimbriae	(ii) Special structure of bacteria which help them to attach with rocks in stream and also to host tissue
C. Endomembrane	(iii) Includes those organelles system whose functions are coordinated
D. Mitochondria	(iv) Divide by fission and site of aerobic respiration

A. A - (i), B - (ii), C - (iii), D - (iv)
B. A - (iii), B - (i), C - (ii), D - (iv)
C. A - (iii), B - (i), C - (iv), D - (ii)
D. A - (i), B - (iv), C - (iii), D - (ii)
Answer : B

23. Which of the following statements is/are correct ?

1. The shape of the cells may vary with the function they perform.
2. Human RBC is about 7.0 ??m in diameter.
3. Cytoplasm is the main area of cellular activities.
4. Various chemical reactions occur in cytoplasm to keep the cell in the living state.

A. (i), (ii), (iii) and (iv)
B. Only (i) and (ii)
C. Only (iv)
D. None of the above
Answer : A

24. 9.A student was given cell samples (A and B) to identify parts which are highlighted. He observed the samples under the microscope and list down the function of the part of cell sample. The information collected by the student is listed in the table below, on the basis of which the student infers that the samples contain the organelles.

Sample A	Sample B
Make energy available for cellular metabolism	Generates ATP and synthes izes s ugar
Absent in cell that carry oxygen throughout the body	Present in plant cell
Called the energy currency of cell	Source o f all the food energy

Explain why the samples were belonged to eukaryotic cell and not prokaryotic cell? Because,
A. eukaryotic cell have membrane bound organelles.
B. eukaryotic cell have non - membrane bound organelles.
C. eukaryotic cell are smaller and multiply more rapidly than prokaryotic cells.
D. eukaryotic cell are larger and multiply more rapidly than prokaryotic cells.
Answer : B

25. Which of the following statements are correct ?

1. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome.
2. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins.
3. RuBisCO is the most abundant protein in the whole biosphere.
4. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system. Of the above statements

A. (iii) and (iv)
B. (i) and (ii)
C. (ii) and (iii)
D. (i) and (iv)
Answer : A

26. Which of the following statements are correct?
A. Na+/K+ pump is an example of active transport.
B. In plant cells lipid like steroidal hormones are synthesized in SER.
C. In plant cells, the vacuoles can occupy up to 10% of the volume of the cell.
D. Chlorophyll and leucoplast are responsible for trapping light energy essential for photosynthesis.
Answer : A

27. Centrifugation of a cell results in the rupture of the cell membrane and the contents compacting into a pellets in the bottom of the centrifuge tube. Bathing this pellet with a glucose solution yields metabolic activity including the production of ATP. One of the contents of this pellet is most likely which of the following?
A. Cytosol
B. Mitochondria
C. Lysosomes
D. Golgi bodies
Answer : B

28. Which of the following terms is not correctly matched with its feature?
A. Osmosis Movement of water by diffusion.
B. Nucleoplasm Site of active synthesis of ribosomal RNA.
C. Mesosome Inolding of cell membrane and characteristics of eukaryotes.
D. Pili Elongated tubular surface structures (made of special protein) of bacteria.
Answer : C

29. Which of the following is not the function of cell wall?

1. Provides shape to the cell.
2. Protects the cell from mechanical damage and infection.
3. Helps in cell to cell interaction.
4. Provides barrier to undesirable macromolecules.

A. Only (i)
B. Only (iv)
C. Only (ii), (iii) and (iv)
D. None of the above
Answer : D

30. A component of cytoskeleton is
A. microtubule
B. bone
C. chitin
D. cartilage.
Answer : A

31. Which of the following is incorrect ?
A. Mycoplasma is the smallest cell (0.3 �).
B. Bacteria are 3 to 5 �m in size.
C. The largest cell is the egg of an ostrich.
D. Nerve cells are some of the smallest cells.
Answer : D

32. Match column-I with column-II and choose the correct option.

Column-I	Column-II
(Chromosome)	(Position of Centromere)
A. Metacentric	I. At the tip
B. Submetacentric	II. Almost near the tip
C. Acrocentric	III. At the middle
D. Telocentric	IV. Slightly away from the middle

A. A III; B IV; C II; D I
B. A IV; B III; C II; D I
C. A I; B II; C III; D IV
D. A IV; B III; C I ; D II
Answer : A

33. Which one of the following is not considered as part of the endomembrane system?
A. Golgi complex
B. Peroxisome
C. Vacuole
D. Lysosome
Answer : B

34. Choose the incorrect match.
A. Nucleus RNA
B. Lysosome Protein synthesis
C. Mitochondria Respiration
D. Cytoskeleton Microtubules
Answer : B

35. Active transport across biomembrane involves
A. production of ATP
B. requirement of energy
C. production of toxin
D. release of energy
Answer : B

36. Axoneme with 9 + 2 microtubular arrangement occurs in
A. cilia
B. flagella
C. both (a) and (b)
D. centriole
Answer : C

37. Match column-I with column-II and select the correct option.

Column - I	Column - II
A. RER	I. Intracellular and extracellular digestion
B. Cell wall	II. Provide structural support to the cell
C. Flagella	III. Protein synthesis and secretion
D. Lysosomes	IV Responsible for cell movement

A. A III, B II, C IV, D I
B. A II, B III, C IV, D I
C. A I, B III, C II, D IV
D. A IV, B II, C III, D I
Answer : A

38. Which of the following statement of a bacterial cell is/are correct?

1. Mesosome is formed by the extensions of plasma membrane into the cell.
2. The pili are elongated tubular structures made up of a protein.
3. Flagellum is composed of filament, hook and basal body.
4. Ribosomes are about 30 nm by 50 nm in size.

A. (i), (ii), (iii)
B. All of the above
C. (ii) & (iv)
D. None of the above
Answer : A

39. Golgi apparatus is absent in
A. higher plants
B. yeast
C. bacteria and blue-green algae
D. None of the above
Answer : C

40. Integral proteins of cell membrane occur on/in
A. inner surfaces
B. outer surfaces
C. phospholipid matrix
D. inner and outer surfaces
Answer : D

41. Choose the wrong statements regarding bacterial cell

1. Glycocalyx is the outermost envelope in bacteria.
2. The glycocalyx could be a loose sheath called capsule.
3. The glycocalyx may be thick and tough called slime layer.
4. A special structure formed by the plasma membrane is called mesosome.
5. Small bristle like fibres sprouting out of the cell are called fimbriae.

A. (i) and (iii)
B. (i) and (ii)
C. (ii) and (iii)
D. (i) and (iv)
Answer : C

42. Nucleolus is
A. rounded structure found in cytoplasm near nucleus.
B. rounded structure inside nucleus and having rRNA.
C. rod-shaped structure in cytoplasm near the nucleus.
D. none of the above.
Answer : B

43. The following diagram represents a structure chromosome.
Identify the structures marked as A, B and C.

A. A - Satellite, B - Primary constriction, C - Acrocentric
B. A - Satellite, B - Secondary constriction, C - Metacentric
C. A - Satellite, B - Centromere, C - Telocentric
D. A - Satellite, B - Centromere, C - Submetacentric
Answer : B

44. Most of water, in mature plant cells occurs in
A. nucleus
B. cell wall
C. vacuoles
D. cytoplasm
Answer : C

45. Which of the following will determines the shape of the cells and provides a strong structural support to prevent the bacterium from bursting or collapsing?
A. Plasmids
B. Cell wall
C. Mesosome
D. Cell membrane
Answer : B

46. Centrioles and centrosomes occur in the cells of
A. green plants B. animals
C. bacteria and cyanobacteria
D. both (b) and (c)
Answer : B