Biology · PYQ NEET UG 2016(2)
हिन्दीName the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.
Correct answer · Option 2
Calcium
Explanation
Calcium ions (\( Ca^{2+} \)) bind to troponin on actin filaments, thereby exposing the active sites for myosin binding during muscle contraction.