Cell The Unit Of Life — DPP 3

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.

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1
How many points are related to nucleus are true :-
(i) Nucleus was first discovered by Robert Brown.
(ii) Chromatin was stained by acidic dyes.
(iii)Chromatin discovered earlier than nucleus.
(iv) Nucleoli is visible in any stage of cell.
(v) Nuclear envelope have two parallel membrane with space between them called perinuclear space.
  1. A (i), (ii), (iv)
  2. B (i), (v)
  3. C (i), (iii), (iv), (v)
  4. D (i), (iii), (v)
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Correct answer: B

2
Statement-I : Microbodies are present in both animal and plants cells.
Statement-II : Eukaryotic cell contain linear ds DNA in chloroplast and mitochondria.
In the light of the above statements, choose the most appropriate answer from the options given below:
  1. A Both Statement-I and II are incorrect.
  2. B Statement-I is correct but Statement-II is incorrect.
  3. C Both Statement-I and II are correct.
  4. D Statement-I is incorrect but Statement-II are correct.
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Correct answer: B

3
The peroxisomes are associated with the phenomenon of :-
  1. A Krebs cycle
  2. B Degradation of $\mathrm { H } _ { 2 } \mathrm { O }$
  3. C Anaerobic respiration
  4. D Photorespiration and degradation of $\mathrm { H } _ { 2 } \mathrm { O } _ { 2 }$
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Correct answer: D

4
Membrane bound vesicular structures formed by the process of packaging in the Golgi apparatus and filled with hydrolytic enzymes, are called :-
  1. A Contractile vacuoles
  2. B Food vacuoles
  3. C Lysosomes
  4. D Centrosome
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Correct answer: C

5
Self duplication does not occur in :-
  1. A Mitochondria
  2. B Centrioles
  3. C Chloroplast
  4. D Ribosome
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Correct answer: D

6
The suicidal bag of an animal cell is :-
  1. A Sphaerosome
  2. B Dictyosome
  3. C Lysosome
  4. D Mitochondria
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Correct answer: C

7
Select the wrong statement from the following:
  1. A The chloroplasts are generally much larger than mitochondria
  2. B Both chloroplasts and mitochondria contain an inner and an outer membrane
  3. C Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
  4. D Both chloroplasts and mitochondria contain DNA
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Correct answer: C

8
Which element is required for maintaining the structure of ribosome?
  1. A $\mathrm { Mg } ^ { + 2 }$
  2. B $\mathrm { Ca } ^ { + 2 }$
  3. C $\mathrm { Zn } ^ { + 2 }$
  4. D $\mathrm { Cl } ^ { - }$
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Correct answer: A

9
Cristae are infoldings of $\_\_\_\_$ present toward the $\_\_\_\_$
Cell The Unit Of Life – NEET-2622
  1. A E and B
  2. B B and C
  3. C C and D
  4. D F and D
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Correct answer: C

10
According to fluid-mosaic model, the quasifluid nature of. $\_\_\_\_$ enables lateral movement of. $\_\_\_\_$ within the overall bilayer. This ability to move within the membrane is measured as its... (i) Carbohydrates (ii) Lipids (iii) Proteins (iv) Fluidity (v) Selective permeability Correct sequence is :-
  1. A ii, iii, iv
  2. B iii, i, iv
  3. C iii, ii, v
  4. D i, ii, iv
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Correct answer: A

11
Site of ATP formation in mitochondria is :-
  1. A Matrix
  2. B Cristae
  3. C $\mathrm { F } _ { 1 }$ particle
  4. D Outer compartment
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Correct answer: C

12
In plant cells the vacuole can occupies upto....... of the volume of the cell.
  1. A 10 percent
  2. B 90 percent
  3. C 50 percent
  4. D 70 percent
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Correct answer: B

13
Given below are two statements:
Statement-I : Oxidative phosphorylation take place in mitochondria.
Statement-II : Calvin cycle take place in chloroplast.
In the light of the above statements, choose the most appropriate answer from the options given below:
  1. A Both Statement-I and II are correct.
  2. B Statement-I is correct but statement-II is incorrect.
  3. C Statement-I is incorrect and Statement-II is correct.
  4. D Both Statement-I and II are incorrect.
Show answer

Correct answer: A

14
A single human cell has approximately $\_\_\_\_$ long thread of DNA distributed among its $\_\_\_\_$ chromosomes:-
  1. A $2 \mathrm {~cm} , 46$
  2. B 2 metre, 46
  3. C $2 \mathrm {~cm} , 23$
  4. D 2 metre, 23
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Correct answer: B

15
Eukaryotes have 80 S, while prokaryotes have 70 S ribosomes in cytoplasm. Here "S":
(a) denotes sedimentation coefficient
(b) is an indirect measure of density
(c) is an indirect measure of size
  1. A a only
  2. B a and b only
  3. C b and c only
  4. D a, b and c
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Correct answer: D

16
Mitochondria are the sites of :-
  1. A Protein synthesis
  2. B Cellular digestion
  3. C Anaerobic respiration
  4. D Aerobic respiration
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Correct answer: D

17
Which of the following are correct for the cell which has naked ds circular DNA?
(a) Both 70 S and 80 S ribosomes
(b) Histone absent
(c) Compartmentalisation of cytoplasm absent
(d) Always diploid
  1. A a and d
  2. B b and c
  3. C a and c
  4. D b and d
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Correct answer: B

18
Select the incorrect statement among them for chromosome :-
  1. A Mitochondria is present in 80 s containing cytoplasm.
  2. B Telocentric chromosome has terminal kinetochores.
  3. C Chromatin also contain non-histone protein and RNA.
  4. D Satellite have not constant location in few chromosomes.
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Correct answer: D

19
Read the following statements (A-D)
(A) Nuclear matrix or nucleoplasm contains nucleolus and chromatin
(B) Outer nuclear membrane usually remains continuous with the ER and also bears ribosomes on it
(C) Nuclear pores are the passages through which movement of protein molecules take place in only one direction from nucleus to the cytoplasm.
(D) Nucleous act as ribosome factory Which of the above statements are correct?
  1. A A, B, C, D
  2. B Only C
  3. C A, C, D
  4. D A, B, D
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Correct answer: D

20
Main function of golgi-complex is :-
  1. A Fermentation
  2. B Phosphorylation
  3. C Respiration
  4. D Packaging of materials for secretion
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Correct answer: D

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