Which of the following ions help in muscle contraction

Which Of The Following Ions Help In Muscle Contraction Biology Question

Which of the following ions help in muscle contraction?

Options

(a) K⁺ and Mg⁺⁺
(b) Na⁺ and K⁺
(c) Ca⁺⁺ and Na⁺
(d) Ca⁺⁺ and Mg⁺⁺

Correct Answer:

Ca⁺⁺ and Mg⁺⁺

Explanation:

Ca²⁺ as well as Mg⁺⁺ help in muslce contraction. Actin and myosin get combined in presence of ATP and Ca²⁺ to form actomyosin to Myosin + Actin –ATP/Ca²⁺—> Actomysin Energy released by the oxidation of food in the form of ATP is broken down into ADP, phosphorus and energy in the presence of enzyme myosin ATPase, Ca²⁺ and Mg²⁺ions. ATP + H₂O —myosin ATPase/Ca²⁺,Mg²⁺—–> ADP + Pi+ Energy The energy is used up in the contraction of muscle.

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Topics: Locomotion and Movement (106)
Subject: Biology (4253)

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