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MCQs

Total Questions : 109 | Page 9 of 11 pages
Question 81. . 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
Question 82. . 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
Question 83.  Which phase of mitosis is associated with separation of chromatids?
  1.    Prophase
  2.    Metaphase
  3.    Anaphase
  4.    Telophase
 Discuss Question
Answer: Option C. -> Anaphase
Question 84. . 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 ->
Question 85. . The term, not related to mitosis is
  1.    gametes
  2.    chromosomes
  3.    DNA replication
  4.    somatic cells
 Discuss Question
Answer: Option A. -> gametes
Question 86. . 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
Question 87. . 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
Question 88. . Cdks bind with __________ , enabling the Cdks to function as enzymes.
  1.    MPF
  2.    cyclins
  3.    histones
  4.    p53
 Discuss Question
Answer: Option B. -> cyclins
Question 89. . Microtubules grow from the poles to kinetochores of each chromatid during
  1.    prophase
  2.    metaphase
  3.    anaphase
  4.    telophase
 Discuss Question
Answer: Option A. -> prophase
Question 90. . During which phase, a cleavage furrow is formed in animal cells?
  1.    C
  2.    G1
  3.    G2
  4.    M
 Discuss Question
Answer: Option A. -> C

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