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Consider the diagram of thin myofilament...

Consider the diagram of thin myofilament.

Now, read carefully the statements about molecular arrangement of actin and myosin in the filament.
I. Each actin (thin filament ) is made up of 2 F-(filamentous) actins.
II. F-actin is the polymer of G-(globular) actin.
III. Two-F-actins are twisted into a helix.
IV. Two strands of tropomyosin run along the entire length of F-actin.
Choose the correct option.

A

I and II

B

III and IV

C

I and IV

D

All of the above

Text Solution

Verified by Experts

The correct Answer is:
d
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