This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Membrane and transpo protiens, Subject name: Physiology
Not a molecular motor: 
Select and explain. 
A. Kinesin, B. Dynein, C. Actin, D. Myosin
C: Actin
Answer: C: Actin 
Explanation: Motor proteins: Molecular motors include the proteins: myosin kinesin dynein They move along a track- microtubules or microfilaments - and pull larger structures such as vesicles, fibers, or paicles. Such movement can be used for intracellular transpo or movement of the cell's entire framework.