EXPERT PLS SEND ANSWER URGENTLY!!!

Solution

Actin and regulatory proteins are located in the thin filaments. Each actin filament is made of two F (filamentous) actins. Tropomyosin and troponin are two regulatory filaments that run close to the F filament. 

Myosin bridges contain ATP binding sites. 

Thus statement 1 is correct and hence the answer.

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