Indicate true (T) and false (F) statements below regarding cytokinesis in animal cells.

Ta. he force for cytokinesis is generated by kinesin motors on microtubule bundles that form the contractile ring.

i. True

ii. False

b. As the contractile ring constricts, its thickness increases to keep a constant volume.

i. True

ii. False

c. The midbody forms from bundles of actin and myosin II.

i. True

ii. False

d. Local activation of Ran GTPase triggers the assembly and contraction of the contractile ring.

i. True

ii. False

Question

Biology

Cory

14 February, 05:14

Indicate true (T) and false (F) statements below regarding cytokinesis in animal cells.

Ta. he force for cytokinesis is generated by kinesin motors on microtubule bundles that form the contractile ring.

i. True

ii. False

b. As the contractile ring constricts, its thickness increases to keep a constant volume.

i. True

ii. False

c. The midbody forms from bundles of actin and myosin II.

i. True

ii. False

d. Local activation of Ran GTPase triggers the assembly and contraction of the contractile ring.

i. True

ii. False

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Answers (1)

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Allisson Riggs · Answer 1

The elongation of the cell takes place in telophase, and due to elongation of the microtubules, the organelles and the cytoplasm get ready to move in a new cell formed by the process of cytokinesis.

a. The given statement is false, as the force of contraction is produced by microtubule and actin bundles that produce the contractile ring.

b. The given statement is true, as, with the constriction of the contractile ring, the thickness also increases so that the volume remains the same.

c. The given statement is false, as the midbody gets generated from bipolar microtubule array.

d. The given statement is false, as local activation of Rho GTPase stimulates the alignment and contraction of the contractile ring.