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notsponge [240]
2 years ago
6

g Indicate true (T) and false (F) statements below regarding cytokinesis in animal cells. Choose the correct answer represented

by a four-letter string composed of letters T and F only, e.g. TFFF. ( ) The force for cytokinesis is generated by kinesin motors on microtubule bundles that form the contractile ring. ( ) As the contractile ring constricts, its thickness increases to keep a constant volume. ( ) The midbody forms from bundles of actin and myosin II. ( ) Local activation of Ran GTPase triggers the assembly and contraction of the contractile ring.
Biology
1 answer:
frozen [14]2 years ago
6 0
<h2>Cytokinesis in animal cells</h2>

Explanation:

  • The force for cytokinesis is generated by kinesin motors on microtubule bundles that form the contractile ring:This statement is false because cytokinesis in animal cells starts with the assembly of contractile ring,contractile band consists of actin and myosin(microfilaments) which catalyse cleavage furrow formation
  • As the contractile ring constricts, its thickness increases to keep a constant volume:This statement is false because thickness remains constant
  • The midbody forms from bundles of actin and myosin: This statement is false because contractile ring forms bundles of actin and myosin whereas midbody is formed from microtubules
  • Local activation of Ran GTPase triggers the assembly and contraction of the contractile ring:This statement is false because local activation of Rho mediates profilin binding to actin and helps in assembly and contraction of contractile ring

The four letter string comes out to be FFFF

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