Question

Select the correct option regarding A, B and C.

(a) A-Tropomyosin-runs close to F-actin throughout its length 

(b) B-Troponin-complex protein distributed at regular interval of tropomyosin 

(c) C-F actin - polymer of monomeric G-actin helically bound to each other 

(d) None of these

Answer 1

The correct option is (c) C-F actin - polymer of monomeric G-actin helically bound to each other.

Explanation:

A -Troponin, B -Tropomyosin, C- F-actin

Two filaments of protein tropomyosin run close to F-actins throughout its length. 

A complex protein troponin is distributed at regular intervals oil the tropomyosin. In the resting state, a subunit of troponin masks the active binding sites for myosin on the actin filaments.