- 1(current)
Q. No.Calcium is important in skeletal muscle contraction because it:
| 1. | binds to troponin to remove the masking of active sites on actin for myosin. |
| 2. | activates the myosin ATPase by binding to it. |
| 3. | detaches the myosin head from the actin filament. |
| 4. | prevents the formation of bonds between the myosin cross bridges and the actin filament. |
Subtopic: Â Excitation Contraction Coupling I |Â Sliding Filament Theory |Â Muscle Contraction: Other Considerations |
 87%
Level 1: 80%+
NEET - 2018
Hints
Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.
(1) Calcium
(2) Magnesium
(3) Sodium
(4) Potassium.
Subtopic: Â Sliding Filament Theory |
 94%
Level 1: 80%+
NEET - 2016
Hints
- 1(current)
Q. No.
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