Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question
Take CBT

Question

What is the role of troponin in muscle contraction?
Options
A Produces ATP for myosin
B Binds calcium and shifts tropomyosin to expose binding sites
Correct Answer
C Anchors the myosin head
D Forms cross-bridges with actin
Correct Answer

Option B is the correct answer.

Detailed Explanation

Troponin is a complex of three proteins that binds calcium ions, causing a conformational change that moves tropomyosin and exposes actin's myosin-binding sites.

Hint

This protein is named for its 'turning' action.

Question Info

Course: ZOO 101
Topic: ZOO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 81 of 2214
Previous Course Details Next