MUSCLE PHYSIOLOGY

PHYSIOLOGY

MUSCLE CONTRACTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the resting state of a sarcomere, a subunit of ____ masks the active binding sites for myosin on the actin filaments
A
Tropomyosin
B
F actin
C
G actin
D
Troponin
Explanation: 

Detailed explanation-1: -A complex protein called troponin is found on tropomyosin at regular intervals. During the resting stage, this protein masks the active binding sites of actin. When the calcium ions get released into the sarcoplasm it binds with the troponin and causes the active sites of actin to open for myosin.

Detailed explanation-2: -So, the correct option is ‘Tropomyosin’.

Detailed explanation-3: -(c) Troponin masks the active binding sites for myosin on actin filament.

There is 1 question to complete.