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Poisons like cyanide inhibit Na^(+) infl...

Poisons like cyanide inhibit `Na^(+)` influx during cellular transport. This inhibitory effect is reversed by an injection of ATP. This demonstrates that

A

`Na^+ - K^+` pump operates in all cells

B

ATP is carrier protein

C

Energy for `Na^+ -K^+` pump come from ATP

D

ATP is hydrolysed by ATPase to release energy

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The correct Answer is:
C
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ATP is injected in cyanide poisoning because it is

Na^+ - K^+ pump is found in membranes of many cells like nerve cells. It works against electrochemical gradient and involves an integral protein ATPase. At the cost of one ATP, ionic gradient across the resting member is maintained by Na^+ - K^+ pump by transporting

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