Cellular Organization

JKPSC Assistant Professor (Zoology) · Zoology · 62 practice questions with answers and explanations: 9 Easy, 53 Medium, 0 Hard.

Sample questions

Sample Easy question 1

The nucleolus is the site of synthesis of:

  1. rRNA
  2. DNA
  3. mRNA
  4. tRNA
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Answer: A. Ribosomal RNA is made and assembled with proteins in the nucleolus.

Sample Easy question 2

The G1/S checkpoint is controlled mainly by the tumour suppressor:

  1. Myc
  2. Ras
  3. Src
  4. p53
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Answer: D. p53 halts the cycle if DNA is damaged.

Sample Easy question 3

Mitochondrial DNA is inherited:

  1. From the mother
  2. From the father
  3. Equally from both
  4. From neither
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Answer: A. Sperm mitochondria are usually lost after fertilisation.

Sample Medium question 4

The coat protein of vesicles from the Golgi to the ER is:

  1. COPII
  2. Caveolin
  3. COPI
  4. Clathrin
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Answer: C. COPII goes from the ER to the Golgi.

Sample Medium question 5

Clathrin-coated vesicles are involved in:

  1. Exocytosis only
  2. Phagocytosis
  3. Receptor-mediated endocytosis
  4. Cell division
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Answer: C. They form at the plasma membrane.

Sample Medium question 6

The mannose 6-phosphate marker directs enzymes to the:

  1. Mitochondrion
  2. Nucleus
  3. Lysosome
  4. Plasma membrane
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Answer: C. It is added in the Golgi.

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