Q. The set of ions necessary for muscle contraction is
A) $Ca^{2 +}\ and\ Mg^{2 +}$
B) $Na^{+}\ and\ {Mg}^{2 +}\ \$
C) $Na^{+}\ and\ K^{+}$
D) $Na^{+}\ and\ Ca^{2 +}$
Explanation
$Ca^{2 +}\ and\ Mg^{2 +}\ are\ necessar\ for\ muscle\ contraction.$ Myosin+ Actin $\underset{Ca^{2 +}}{\overset{ATP}{\rightarrow}}$ Actomyosin ATP +$H_{2}O\underset{Ca^{2 +}\ /\ Mg^{2 +}}{\overset{Myosin\ ATP\ are}{\rightarrow}}$ ADP + $P_{i} + energy$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.