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ATP Synthase

The G-actin p...

Question

The G-actin polymerises to form the F-actin in the presence of ____________

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Solution

The G-actin polymerizes to form the F-actin in the presence of ATP.

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Q. Read the statements regarding muscle proteins. Which of the following statement is correct?
(A) Actin is a thin filament and is made up of two F-actins.
(B) The complex protein, tropomyosin is distributed at regular intervals on the troponin.
(C) Myosin is a thick filament, which is also a polymerised protein.
D) The globular head of meromyosin consists of light meromyosin (LMM).

Q. Read the following statements:

(a) Each thin filament is made of two F-actins.

(b) Each G-actin is polymer of F-actins.

(c) Two filaments of tropomyosin run close to the F-actins throughout it's length.

(d) Troponin is distributed at irregular internals on the tropomyosin.

(e) During contracted state a subunit of troponin masks the actin binding sites for myosin on the actin filaments.

Choose the correct statement(s).

Q. During muscular contraction, the myosin head binds to the exposed active sites on actin to form a?

Q. Component of actin filament of a sarcomere is

300

N, while actin on an area A, produces a pressure of

1500

Pa. What is the magnitude of A in

c m^{2}

?

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