What does troponin bind to,and what happens when it binds? A) Ca²⁺; tropomyosin shifts B) tropomyosin; the sarcomere relaxes C) acetylcholine; the sarcomere shortens D) ATP; tropomyosin returns to normal position E) T tubules; the sarcomere shortens

Question

Quizplus · Accepted Answer

Troponin binds to Ca²⁺ and this results in a shift of the tropomyosin threads, exposing myosin-binding sites.

What Does Troponin Bind To,and What Happens When It Binds