Cell The Unit Of Life — DPP 4

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
Non-pigmented part of chloroplast is called:-
  1. A Thylakoids
  2. B Grana
  3. C Stroma
  4. D Lamellae
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Correct answer: C

2
70 S type of ribosomes are found in :-
  1. A Prokaryotic cells
  2. B Prokaryotic cells, chloroplasts and mitochondria
  3. C Mitochondria
  4. D Nucleus, mitochondria
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Correct answer: B

3
Microtubules are composed of :-
  1. A Actin protein
  2. B Myosin protein
  3. C Tubulin protein
  4. D Dynein protein
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Correct answer: C

4
The smooth endoplasmic reticulum is the major site for :-
  1. A Synthesis of protein
  2. B Synthesis of carbohydrate
  3. C Synthesis of lipid
  4. D Synthesis of nucleic acid
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Correct answer: C

5
Every chromosome essentially has the $\_\_\_\_$ on the sides of which disc shaped structures called $\_\_\_\_$ are present. Choose the correct words for the blanks respectively
  1. A Centrosome, centrioles
  2. B Kinetochore, centrosome
  3. C Centromere, Kinetochores
  4. D DNA, RNA
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Correct answer: C

6
The fluid nature of the membrane is helpful in function of :-
  1. A Cell growth
  2. B Cell division
  3. C Endocytosis
  4. D All the above
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Correct answer: D

7
According to fluid-mosaic model, the quasi-fluid 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 to fill the blanks :-
  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

8
Given below are two statements:
Statement-I : Ribosomes are known as organelle within organelle.
Statement-II : Peroxisomes degrade $\mathrm { H } _ { 2 } \mathrm { O } _ { 2 }$ into $\mathrm { H } _ { 2 } \mathrm { O }$ and $\mathrm { O } _ { 2 }$ with the help of catalase enzyme.
In the light of the above statements, choose the most appropriate answer from the options given below :-
  1. A Both Statement-I and Statement-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 both are incorrect.
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Correct answer: A

9
RER (Rough Endoplasmic Reticulum) :-
(a) Bears 80 S ribosomes on their oute surface
(b) Frequently observed in the cells activel involved in protein synthesis and secretio
(c) Are extensive and continuous with oute nuclear membrane
(d) Synthesizes steroid hormones in anima cells Find out the incorrect statement(s) :-
  1. A a and c
  2. B b and d
  3. C b only
  4. D d only
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Correct answer: D

10
In which cell organelle following reaction takes place?
$6 \mathrm { CO } _ { 2 } + 12 \mathrm { H } _ { 2 } \mathrm { O } \rightarrow 6 \mathrm { O } _ { 2 } + 6 \mathrm { H } _ { 2 } \mathrm { O }$
  1. A Mitochondria
  2. B Peroxisome
  3. C Chloroplast
  4. D Glyoxisome
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Correct answer: C

11
Telomerase is an enzyme which is a :-
  1. A Simple protein
  2. B RNA
  3. C Ribonucleoprotein
  4. D Repetitive DNA
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Correct answer: C

12
Statement-I : Smooth endoplasmic reticulum is major site for synthesis of lipid.
Statement-II : In animal cells lipid like steroid hormone are synthesised in SER.
In the light of the above statements, choose the most appropriate answer from the options given below:
  1. A Statement-I is correct but Statement-II is incorrect.
  2. B Statement-I is incorrect but Statement-II are correct.
  3. C Both Statement-I and II are incorrect.
  4. D Both Statement-I and II are correct.
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Correct answer: D

13
Chlorophyll in chloroplasts is located in -
  1. A Grana and stroma thylakoids
  2. B Only in stroma thylakoids
  3. C Stroma
  4. D Both grana and stroma
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Correct answer: A

14
One of the most important functions of the plasma membrane is :-
  1. A Formation of nuclear membrane
  2. B Transport of molecules across it
  3. C Exocytosis
  4. D Detoxification
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Correct answer: B

15
Which part of chromosome is concern with ageing of organism?
  1. A Centromere
  2. B Telomere
  3. C Kinetochore
  4. D Satellite
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Correct answer: B

16
Classification of plastids into chloroplast, chromoplast and leucoplast is based on -
  1. A Stored food
  2. B Pigments
  3. C Structure
  4. D Size
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Correct answer: B

17
Classification of chromosomes is based on -
  1. A the size of satellite
  2. B Number of telomeres
  3. C Position of centromere
  4. D Position of secondary constriction
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Correct answer: C

18
The long arm and short arm of chromosome which appears during metaphase of cell cycle is represented by :-
  1. A Long arm - s , Short arm-p
  2. B Long arm-p, Short arm-q
  3. C Long arm-p, Short arm-s
  4. D Short arm-p, Long arm-q
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Correct answer: D

19
The stroma of the chloroplast contains enzymes for the synthesis of :-
  1. A Lipids
  2. B Carbohydrates
  3. C Proteins
  4. D Carbohydrates and proteins
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Correct answer: D

20
Which cell organelle is formed by Golgi apparatus.
  1. A Lysosome
  2. B Vacuole
  3. C Ribosomes
  4. D Both (A) and (B)
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Correct answer: D

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