The movement and placement of organelles within animal cells is controlled by 2 ATP-binding motor
Proteins called kinesin and dynein. Mutations in either of these 2 proteins that interfere with these processes would most likely be associated with defective binding to which of the following structures?
A) actin filaments
B) ciliary doublets
C) intermediate filaments
D) microtubules
E) myosin fibrils

Question

Quizplus · Accepted Answer

Kinesin and dynein are motor proteins that move along microtubules, which are part of the cytoskeleton, to transport organelles and other cellular components.  Dynein and kinesin transport various cellular components by "walking" along cytoskeletal microtubules. Dyneins move toward the minus end of the microtubule, which is usually oriented toward the cell center. Thus, they are called minus end- directed motors. In contrast, kinesins are motor proteins that move toward the microtubules' plus end, are called plus end-directed motors. Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nuclear and cell division, organization of intracellular structures, and intracellular transport, as well as ciliary motility

The Movement and Placement of Organelles Within Animal Cells Is