Motor proteins require which of the following structures or molecules to function in the movement of chromosomes toward the poles of the mitotic spindle?
A) intact centromeres
B) a microtubule-organizing center
C) ATP as an energy source
D) intact cohesin

Question

Quizplus · Accepted Answer

Motor proteins such as dynein and kinesin use ATP as an energy source to move along microtubules and transport chromosomes toward the poles of the mitotic spindle. While intact centromeres and cohesin are important for proper chromosome alignment and segregation, they are not directly required for the function of motor proteins. Additionally, a microtubule-organizing center such as the centrosome is necessary for the formation of the mitotic spindle, but not specifically for the function of motor proteins in chromosome movement. Therefore, the best choice is C, ATP as an energy source.

Motor Proteins Require Which of the Following Structures or Molecules