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MCQs

Total Questions : 109 | Page 3 of 11 pages
Question 21. Which of the following triggers the division of activated T lymphocytes?
  1.    FGF
  2.    Interlukin 2
  3.    PDGF
  4.    Erythroprotein
 Discuss Question
Answer: Option B. -> Interlukin 2
Answer: (b).Interlukin 2
Question 22. The term, not related to mitosis is
  1.    gametes
  2.    chromosomes
  3.    DNA replication
  4.    somatic cells
 Discuss Question
Answer: Option A. -> gametes
Answer: (a).gametes
Question 23. Which of the following statements about mitosis is incorrect?
  1.    The daughter nuclei are genetically identical to the parent nucleus
  2.    Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
  3.    Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
  4.    Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers
 Discuss Question
Answer: Option B. -> Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
Answer: (b).Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
Question 24. What structure forms as a network of protein cables during cell division?
  1.    Spindle
  2.    Aster
  3.    Kinetochore
  4.    Chromatid
 Discuss Question
Answer: Option A. -> Spindle
Answer: (a).Spindle
Question 25. A centromere is
  1.    another name for kinetochore
  2.    the structure to which microtubules attach
  3.    a constriction on a chromosome bound to a disk
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 26. Which of the following is the normal cell cycle, primarily regulated at checkpoints?
  1.    Metaphase in mitosis
  2.    Anaphase, G1 boundary
  3.    G1-S boundary
  4.    S-G2 boundary
 Discuss Question
Answer: Option C. -> G1-S boundary
Answer: (c).G1-S boundary
Question 27. Sequences that correctly describes the cell cycle is
  1.    -> G1-> G2 -> S -> mitosis -> cytokinesis ->
  2.    -> S -> G2 -> mitosis -> cytokinesis -> G1 ->
  3.    -> G1 ->S -> G2 -> cytokinesis -> mitosis ->
  4.    ->cytokinesis-> mitosis -> G1 -> S -> G2 ->
 Discuss Question
Answer: Option B. -> -> S -> G2 -> mitosis -> cytokinesis -> G1 ->
Answer: (b).-> S -> G2 -> mitosis -> cytokinesis -> G1 ->
Question 28. At the __________ checkpoint, cell growth is controlled.
  1.    C
  2.    G1
  3.    G2
  4.    S
 Discuss Question
Answer: Option B. -> G1
Answer: (b).G1
Question 29. The phase of mitosis which is associated with the formation of the nuclear envelope, is
  1.    prophase
  2.    metaphase
  3.    anaphase
  4.    telophase
 Discuss Question
Answer: Option D. -> telophase
Answer: (d).telophase
Question 30. A nuclear envelope forms around each set of sister chromatids in
  1.    anaphase
  2.    metaphase
  3.    prophase
  4.    telophase
 Discuss Question
Answer: Option D. -> telophase
Answer: (d).telophase

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