"describe the mechanism of feedback inhibition and the role this process plays in controlling enzyme activity."

1 answer:

6 0

In biochemistry, feedback inhibition occurs when the end product produced by the reaction using an enzyme, interacts with the enzyme again such that it inhibits the initial reactants. This is important in metabolic reactions to control too much production of amino acids or too much work done by enzymes to break down macromolecules.

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Answer:A. The release of calcium ions causes myosin and actin to attach to each other.

The contraction of skeletal muscles takes place by induction of a nerve impulse, which produces a movement and the interaction of the filaments containing proteins named as actin and myosin. This interaction of filaments is regulated by proteins called tropomyosin and troponin present on the actin filaments. The motor nerve causes the depolarization of the muscle membrane sarcolemma. This triggers the sarcoplasmic reticulum to release calcium ions. This calcium binds to troponin and thus allows the tropomyosine strand on the actin filament to displace so that the part of the actin where myosine head needs to be attached remain uncovered. Binding of the actin myosine filament results in contraction.

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