(i) Each actin (thin filament) is made of 2F (filamentous) actins. |
(ii) F-actin is the polymer of G (globular) actin. |
(iii) 2F-actins are twisted into a-helix. |
(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin. |
(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomysin. |
(vi) Troponin forms the head of the myosin molecule. |
(vii) The myosin is a polymerised protein. |
A) (i), (iii), (vii)
B) (ii), (iv) and (v)
C) Only (vi)
D) Only (iii)
Correct Answer: C
Solution :
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