Question

33) In a dividing cell, the physical separation of chromosomes during the mitotic phase depends on...

33) In a dividing cell, the physical separation of chromosomes during the mitotic phase depends on the dynamic of what moleculas complexes?
a) myosin only
b) microtubules only
c) both microtubules motors and microtubules
d) both myosin and actin filaments
e) kinesin only

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Answer #1

Answer: option c) Both microtubule motors and microtubules.

Explanation:

Microtubules has different functions and one of them is in the separation of the chromosomes. Microtubule motors are the proteins that can walk along the microtubules. Kinesin and dyneins are the two microtubule motor proteins which moves along the microtubules. Many members of the kinesin takes part in the spindle formation, chromosome movement, and chromosome segregation. Dynein takes part in the positioning of the spindle during mitotic division. Both microtubule motors and microtubules works together for the segregation of chromosomes.

Myosin and actin are proteins associated with muscle contraction.

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