Explain the role of each of the following in mitosis or cytokinesis - Kinetochores - Microtubules - Motor proteins - Actin filaments 2011B AP FRQ.

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Presentation transcript:

Explain the role of each of the following in mitosis or cytokinesis - Kinetochores - Microtubules - Motor proteins - Actin filaments 2011B AP FRQ

Microtubules- -Make up spindle fibers (cytoskeleton) -responsible for movement of chromosomes AND elongating cell during cell division

Kinetochores- -spot on centromere where spindle fiber attaches -hold motor proteins that depolymerize microtubules as they move Motor proteins- - “Pacman-like” motor proteins attached to kinetochore that “walk” along microtubules of spindle

Actin microfilaments create a ring around cell and tighten to pinch cell during cytokinesis (cleavage furrow)

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