Question

biochemical change in muscle contraction​

Answer 1

Answer:

Muscle contraction occurs when the thin actin and thick myosin filaments slide past each other.Current biochemical studies suggest that the myosin cross-bridge exists in two main conformations.

Explanation:

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Answer 2

$\huge\purple{Answer}$

Biochemical events associated with activation of smooth muscle contraction were studied in neurally stimulated bovine tracheal smooth muscle. A latency period of 500 ms preceded increases in isometric force and myosin light chain phosphorylation. However, stimulation resulted in the rapid hydrolysis of inositol phospholipids as demonstrated by increases in inositol phosphates by 500 ms. Inositol trisphosphate increased 2-fold with no significant change in inositol tetrakisphosphate. The apparent activation state of myosin light chain kinase was assessed indirectly through measurements of the fractional activation of a second calmodulin-dependent enzyme, cyclic nucleotide phosphodiesterase.