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SSC GD - Cell - the unit of life 1000+ MCQ [Solved] PDF Download

Thursday 9th of March 2023

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Downlaod Cell - the unit of life MCQ PDF
1. Match column-I with column-II and select the correct option.
Column - IColumn - II
A. RERI. Intracellular and extracellular digestion
B. Cell wallII. Provide structural support to the cell
C. FlagellaIII. Protein synthesis and secretion
D. LysosomesIV 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
2. 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
3. Which one of the following pairs is not correctly matched?
A. Cristae The tubular structure formed by the folding of the inner membrane of the mitochondrion.
B. Plasmodesmata The membrane surrounding the vacuole in plants.
C. Grana Membrane bound discs in chloroplasts that contain chlorophylls and carotenoids.
D. Middle lamella Layer between adjacent cells walls in plants derived from cell plate.
Answer : B
4. In which method of transport, plasma membrane does not require carrier molecule?
A. Active transport
B. Facilitated diffusion
C. Simple diffusion
D. Na+ K+ pump
Answer : C
5.
Which cellular structure helps in transferring genetic information from one generation to another?
A. W
B. X
C. Y
D. Z
Answer : C
6. 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
7. Prokaryotic and eukaryotic flagella differ in the
A. type of movement and placement.
B. location and mode of functioning.
C. microtubular structure and function.
D. microtubular organization and type of movement.
Answer : D
8.
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
9. 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
10. Lysosomes contain
A. carbohydrates
B. hormones
C. nucleic acids
D. hydrolases.
Answer : D
11. Golgi apparatus is absent in
A. higher plants
B. yeast
C. bacteria and blue-green algae
D. None of the above
Answer : C
12. Integral proteins of cell membrane occur on/in
A. inner surfaces
B. outer surfaces
C. phospholipid matrix
D. inner and outer surfaces
Answer : D
13. Polysome is a chain of
A. oxysomes
B. sphaerosomes
C. ribosomes
D. dictyosomes
Answer : C
14. Which of the following option correctly match A, B, C, and D indicated in the given sectional view of chloroplasts.
A. A - Thylakoid, B-Stromal lamella, C - Stroma, D - Granum
B. A - Granum, B - Thylakoid, C - Stromal lamella, D - Stroma
C. A - Thylakoid, B - Granum, C - Stromal lamella, D - Stroma
D. A - Granum, B - Thylakoid, C - Stroma, D - Stromal lamella
Answer : B
15. Axoneme with 9 + 2 microtubular arrangement occurs in
A. cilia
B. flagella
C. both (a) and (b)
D. centriole
Answer : C
16. Match column-I and column-II and select the correct answer
Column-IColumn-II
A. Bacteria without wallsI. Lysosome
B. Small circular DNAII. Mycoplasma cells
C. Flattened sacs inIII. Thylakoid a chloroplast
D. A vesicle in whichIV. Plasmid hydrolytic enzymes are stored
A. A III; B IV; C II; D I
B. A II; B IV; C III; D I
C. A I; B II; C II; D IV
D. A IV; B III; C I ; D II
Answer : B
17. Membranous extensions in blue green algae are known as
A. phytochrome
B. chromatophore
C. mesosome
D. pneumatophore
Answer : B
18. Which of the following lacks cell wall?
A. Gametes
B. Amoeba
C. Mycoplasma
D. All of these
Answer : D
19. Active transport differs from passive transport in that active transport
A. requires energy.
B. always requires input of ATP.
C. moves molecules against a concentration gradient.
D. both (a) and (c)
Answer : D
20. 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
21. Golgi apparatus is concerned with
A. excretion
B. secretion
C. ATP synthesis
D. RNA synthesis
Answer : A
22. 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
23. In the given figure of animal cell, one orginelle is marked as A. Select the correct identification and function of the organelle A from the given option.
A. Endoplasmic reticulum Synthesis of lipids.
B. Mitochondria Produce cellular energy in the form of ATP.
C. Golgi body Provides packaging material.
D. Lysosomes Secrete hydrolytic enzymes.
Answer : B
24. 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
25. The main organelle involved in modification and routing of newly synthesized proteins to their destinations is
A. chloroplast
B. mitochondria
C. lysosome
D. endoplasmic reticulum
Answer : D
26. Grana are
A. protein storing plastids.
B. coloured plastids.
C. stacks of thylakoids.
D. individual thylakoids present in stroma.
Answer : C
27. Basal bodies are associated with the formation of
A. phragmoplast
B. cilia and flagella
C. cell plate
D. kinetochore
Answer : B
28. Select the statements which are related to Schwann.
  1. He reported that cells have a thin outer layer which is today known as plasma membrane
  2. Cell wall is a unique character of the plant cell.
  3. Body of plants and animals are composed of cells and products of cells.
A. Only (i)
B. Only (iii)
C. (i) and (iii)
D. All of these
Answer : D
29. Statement 1: Centrosomes and centrioles are related to each other.
Statement 2: Centrosome usually contains two cylindrical structures called centrioles.
A. Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.
B. Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.
C. Statement -1 is true and statement - 2 is false.
D. Statement -1 is false and statement - 2 is true.
Answer : A
30. Study the following statements on cilium or flagellum and answer the question.
  1. Cilium / Flagellum contains an outer ring of nine doublet microtubules surrounding two singlet microtubules.
  2. Cilia are smaller which work like oars, causing the movement of either the cells or surrounding fluid.
  3. Flagella are comparatively longer and responsible for cell movement.
  4. Cilium and flagellum are covered with plasma membrane.

Which of the above statements are correct?
A. (i) and (ii)
B. (i), (ii), (iii) and (iv)
C. (i) and (iv)
D. (ii) and (iii)
Answer : B
31. Microtubules, motor proteins, and actin filaments are all part of the
A. mechanism of photosynthesis that occurs in chloroplasts.
B. rough ER in prokaryotic cells.
C. cytoskeleton of eukaryotic cells.
D. process that moves small molecules across cell membranes.
Answer : C
32. Which of the following pair lack the unit membrane?
A. Nucleus and E.R.
B. Mitochondria and chloroplast
C. Ribosome and nucleolus
D. Golgi body and lysosome
Answer : C
33. Plastids are found in
A. all animal cells.
B. some animal cells.
C. all plant cells.
D. all plant cells and euglenoides.
Answer : D
34. Match column-I with column-II and choose the correct option.
Column-IColumn-II
(Chromosome)(Position of Centromere)
A. MetacentricI. At the tip
B. SubmetacentricII. Almost near the tip
C. AcrocentricIII. At the middle
D. TelocentricIV. 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
35. Microtubules are absent in
A. mitochondria
B. centriole
C. flagella
D. spindle fibres
Answer : A
36. Match column-I (cell organelle) with column-II membrane and select the correct option from the codes given below.
Column-IColumn-II
A. MitochondriaI. Without membrane
B. LysosomesII. Single membrane
C. RibosomesIII. Double membrane
A. A - I, B - II, C - III
B. A - III, B - I, C - II
C. A - III, B - II, C - I
D. A - II, B - III, C - I
Answer : C
37. 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
38. Given below are some characters of a cell organelle identify the correct organelle which shows all the characters described above.
  1. It is a membrane bound space found in the cytoplasm.
  2. It is bound by a single membrane called tonoplast.
  3. It contains water, sap, excretory products and other materials not useful to the cell.
  4. It has higher concentration of sap than the cytoplasm.
A. Golgi apparatus
B. Lysosomes
C. Endoplasmic reticulum
D. Vacuoles
Answer : D
39. Active transport across biomembrane involves
A. production of ATP
B. requirement of energy
C. production of toxin
D. release of energy
Answer : B
40. The fluidity of membranes in a plant in cold weather may be maintained by
A. increasing the number of phospholipids with unsaturated hydrocarbon tails.
B. increasing the proportion of integral proteins.
C. increasing concentration of cholesterol in membrane.
D. increasing the number of phospholipids with saturated hydrocarbon tail.
Answer : A
41. Which of the following statement is false?
A. The ribosomes of a polysome translate the mRNA into protein.
B. Mitochondria divide by fragmentation.
C. All cell arise from pre-existing cells.
D. The lipid component of the membrane mainly consists of phosphoglycerides.
Answer : B
42. Which one of the following organelle given below is correctly matched with its function ?
A. Golgi apparatus Protein synthesis
B. Golgi apparatus Formation of glycolipids
C. Rough endoplasmic reticulum Protein synthesis
D. Rough endoplasmic reticulum Formation of glycoproteins
Answer : C
43. Read the statements given below with regard to the functions performed by Golgi apparatus ?
  1. Transport and chemically modify the materials contained within it.
  2. Performs the function of packaging materials.
  3. Important site of formation of glycoproteins and glycolipids.

Which of the following is the correct answer ?
A. (i) is wrong but (ii) and (iii) are correct
B. (ii) is wrong but (i) and (iii) are correct
C. (ii) and (iii) are wrong but (i) is correct
D. All are correct.
Answer : D
44. Which of the following statement is correct regarding vacuole?
A. It is membrane-bound and contains storage proteins and lipids.
B. It is membrane-bound and contains water and excretory substances.
C. It lacks membrane and contains air.
D. It lacks membrane and contains water and excretory substances.
Answer : B
45. 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 ASample B
Make energy available for cellular metabolismGenerates ATP and synthes izes s ugar
Absent in cell that carry oxygen throughout the bodyPresent in plant cell
Called the energy currency of cellSource 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
46. In which of the following the cells are held together by a Ca-pectate layer?
A. Primary cell wall
B. Secondary cell wall
C. Middle lamella
D. Tertiary cell wall
Answer : C
47. Read the folowing statements and identify the correct option.
  1. Contractile vacuole takes part in osmoregulation and excretion.
  2. Food vacuole is formed by engulfing the food particles.
  3. The vacuole is bound by a double membrane called tonoplast.
  4. Vacuole can occupy upto 90 percent of the volume of the cell.
A. (i) and (ii)
B. (ii) and (iv)
C. (i), (ii) and (iv)
D. None of the above
Answer : C
49. Identify the cell organelle given below. Which is an important site of formation of glyeoproteins & glycolipids
A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
C. Golgi body
D. mitochondria
Answer : C
50. 8.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 ASample B
Make energy available for cellular metabolismGenerates ATP and synthes izes s ugar
Absent in cell that carry oxygen throughout the bodyPresent in plant cell
Called the energy currency of cellSource o f all the food energy

Identify the part highlighted in the sample A and B and explain why they were called as semi-autonomous organelles?
A. Sample A - Mitochondria, Sample B - Chloroplast; because both the organelles are double membrane bound structure.
B. Sample A- Mitochondria, Sample B - Chloroplast; because they both are capable of synthesis of their own proteins only.
C. Sample A - Mitochondria, Sample B - Chloroplast; because they are capable of synthesis of their own proteins and contain their own DNA.
D. Sample A- Mitochondria, Sample B - Chloroplast; because they contain their own DNA to transfer the genetic information from one generation to another.
Answer : C
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