First slide

Muscle

Question

Which of the following is an active ATPase?

Easy

A

HMM
B

LMM
C

G actin
D

F actin

Solution

Globular head of Myosin acts as the ATPase. In Myosin, head with a short arm is made of HMM (heavy meromyosin) and tail is made of LMM (light meromyosin).
Actin does not act as ATPase.

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