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

question 12

Multiple Choice

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

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