Cell The Unit Of Life — DPP 6

20 NEET questions from Cell The Unit Of Life, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
Ribosomes are composed of :-
  1. A Deoxyribonucleic acid and ribonucleic acid.
  2. B Deoxyribonucleic acid and proteins.
  3. C Ribonucleic acid and proteins.
  4. D Proteins, ribonucleic acid and deoxyribonucleic acid.
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Correct answer: C

2
Select the mismatch option :-
  1. A Cell wall - Prevent bacteria from bursting
  2. B Slime layer - loose sheath
  3. C Cell wall - determine the shape of host cell
  4. D Capsule -Thick and tough
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Correct answer: C

3
Which cell organelle releases oxygen ?
  1. A Mitochondria
  2. B Golgi-body
  3. C Chloroplast
  4. D Ribosome
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Correct answer: C

4
The Ribosomes are made up of -
  1. A DNA + Protein
  2. B RNA + Protein
  3. C DNA + RNA
  4. D Only protein
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Correct answer: B

5
Endoplasmic reticulum helps in :-
  1. A The transport of substances
  2. B Synthesis of lipoproteins
  3. C Synthesis of glycogen
  4. D All of the above
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Correct answer: D

6
Which one of the following cellular parts is correctly described?
  1. A Ribosomes - those on chloroplasts are larger ( 80 S ) while those in the cytoplasm are smaller (70 S)
  2. B Lysosomes-optimally active at a pH of about 8.5
  3. C Thylakoids-flattened membranous sacs forming the grana of chloroplasts
  4. D Centrioles - sites for active RNA synthesis
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Correct answer: C

7
Cell sap contains :-
  1. A Water + Reserve food
  2. B Water + Excretory products
  3. C Water + Secretory materials
  4. D All of the above
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Correct answer: D

8
Hetero-chromatin is :-
  1. A Darkly stained part of chromatin
  2. B Lightly stained part of cristae
  3. C Lightly stained part of grana
  4. D Scattered Lobes in cytoplasm
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Correct answer: A

9
Inner mitochondrial membrane forms infoldings called :-
  1. A Thylakoid
  2. B Cisternae
  3. C Oxysomes
  4. D Cristae
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Correct answer: D

10
Space between parallel nuclear membranes is called perinuclear space which is :-
  1. A $10 - 50 \mathrm {~nm}$
  2. B $0.1 - 0.4 \mu \mathrm {~m}$
  3. C $10 - 50 \AA$
  4. D $1 - 4 \mathrm {~nm}$
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Correct answer: A

11
The cis and the trans faces of golgi body are :
  1. A Completely similar but not inter connected
  2. B Entirely different and not interconnected
  3. C Entirely different but interconnected
  4. D Completely similar and interconnected
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Correct answer: C

12
Carbohydrates are present in the plasma membrane in the form of :-
  1. A Hemicellulose
  2. B Cellulose
  3. C Starch
  4. D Glycoprotein
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Correct answer: D

13
Middle lamella is composed mainly of: -
  1. A Phosphoglycerides
  2. B Hemicellulose
  3. C Muramic acid
  4. D Calcium pectate
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Correct answer: D

14
Which of the following cell organelles lack DNA?
  1. A Mitochondria
  2. B Chloroplast
  3. C Nucleus
  4. D Lysosome
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Correct answer: D

15
Plant and prokaryotic cells are similar with each other but differ from animal cells :-
  1. A In possessing 70 S ribosomes
  2. B In possessing cell wall
  3. C In possessing mitochondria
  4. D In possessing chloroplasts
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Correct answer: B

16
Assertion : RER is frequently observed in cell actively involved in protein synthesis and secretion.
Reason : RER have ribosomes attached to its outer surface.
In the light of the above statements, choose the most appropriate answer from the options given below :-
  1. A Both (A) and (R) are correct but (R) is not the correct explanation of (A).
  2. B (A) is not correct but (R) is correct.
  3. C (A) is correct but (R) is not correct.
  4. D Both (A) and (R) are correct and (R) is the correct explanation of (A).
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Correct answer: D

17
Algae have cell wall made up of:
  1. A Cellulose, hemicellulose and pectins
  2. B Cellulose, galactans and mannans
  3. C Hemicellulose, pectins and proteins
  4. D Pectins, cellulose and proteins
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Correct answer: B

18
Which one of the following is not a component of endomembrane system ?
(a) Endoplasmic reticulum
(b) Golgi body
(c) Lysosome
(d) Vacuole
(e) Nucleus
  1. A Both a and c
  2. B Only c
  3. C d and e both
  4. D Only e
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Correct answer: D

19
Which of the following is not the function of cell wall ?
(i) Provides shape to the cell.
(ii) Protects the cell from mechanical damage and infection.
(iii) Helps in cell to cell connection.
(iv) Provides barrier to undesirable macromolecules.
(v) Helps in cell recognition Options :-
  1. A only (iii)
  2. B only (iv)
  3. C only (ii), (iii) & (v)
  4. D only (v)
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Correct answer: A

20
If living cells, similar to those found on earth, were found on another planet, where there was no oxygen, then which cell organelle would most probably be absent ?
  1. A Ribosomes
  2. B Golgi apparatus
  3. C Mitochondria
  4. D Endoplasmic Reticulum
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Correct answer: C

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