Kinesin 1 Is Highly Processive Motor,taking More Than 100 Steps

Multiple Choice

Kinesin 1 is highly processive motor,taking more than 100 steps (covering 1 μm along a microtubule) before dissociating,primarily because

A) it hydrolyzes ATP more rapidly than other motors.
B) one of its two heads is always attached in it hand-over-hand mechanism.
C) light chains at its nonmotor end attach to cargo vesicles.
D) its efficiency of converting ATP hydrolysis energy to useful work is 60-70%.
E) All are required for processivity.