Question

Actin and myosin proteins are related with

• A. $N{a}^{+}$ and $K^{+}$ pump
• B. Muscle contraction
• C. Nervous system
• D. Excretion of water products

Answer 1

Answer: (B)

Actin filaments, usually in association with myosin, are responsible for many types of cell movements. Myosin is the prototype of a molecular motor-a protein, that converts chemical energy in the form of ATP to mechanical energy, thus generating force and movement. Such movement is muscle contraction.

Hence the correct option is B.