| I. Actin is a thin filament and is made up of two f-actins. |
| II. The complex protein, tropomyopin is distributed at regular intervals on the troponin. |
| III. Myosin is a thick filament, which is also a polymerised protein. |
| IV. The globular head of meromyosin consists of Light Meromyosin (LMM). |
A) I, II and IV
B) I and III
C) I, II and III
D) II and IV
Correct Answer: B
Solution :
Tropomyosin is a double stranded helical rod. It is fibrous molecule that attaches to actin in the groove between its filament. The globular head of meromyosin consists of Heavy Meromyosin (HMM).
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