Calcium ions triggers muscle contraction by binding to ___________________?
Correct answer: B. Troponin
- A. Actin
- B. Troponin
- C. Myosin
- D. Tropomyosin
Explanation
Calcium binds to troponin C, causing the troponin-tropomyosin complex to move away from actin’s myosin-binding sites. This permits cross-bridge formation and contraction.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Cell and General Physiology
31 free Cell and General Physiology MCQs from Physiology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physiology questions like this
Physiology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Cell and General Physiology questions
Contractile element in myofibril is_______________?
In an isotonic contraction of the muscle________________?
Tendon (or) ligament is attached to a bone through ____________?
Which of the following is not a marker of bone formation_________________?
Decreased basal metabolic rate is seen in_______________?
Valve of Hasner is present at________________?