Which of the following results may occur if troponin is unable to bind to calcium? Choose the TWO best answers Cross bridges between actin and myosin will fail to form. Myosin will denature The muscle will stay relaxed in the presence of an action potential. Actin active sites will always be exposed.
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Step 1: If troponin is unable to bind to calcium, the cross bridges between actin and myosin will fail to form. Show more…
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Calcium plays what role in skeletal muscle contraction? a. Binds the myosin head, opening up cross-bridge formation sites on actin b. Binds tropomyosin, causing a conformational change that moves troponin, unblocking the crossbridge formation site on the actin c. Binds globular actin, rolling the tropomyosin from its position, and unblocking the cross-bridge binding site on troponin d. Binds troponin, causing a conformational change that moves tropomyosin, opening up the cross-bridge formation site on the actin molecules
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