When
comparing the cellular mechanisms of heat production in brown adipocytes versus
skeletal muscle, which of the following statements accurately describes the
"uncoupling" processes involved?

Question

Accepted Answer

Brown
adipose tissue utilises UCP1 to uncouple the proton gradient from ATP
synthesis, while skeletal muscle can generate heat via Sarcolipin (SLN), which
uncouples ATP hydrolysis from calcium transport by the SERCA pump.

Answer

Futile
calcium cycling in skeletal muscle is driven by the activation of
β3-adrenoceptors, which are the primary adrenergic receptors for thermogenesis
in adult humans.

Answer

Skeletal muscle utilises UCP3 to uncouple ATP synthesis, whereas brown adipose tissue uses Sarcolipin (SLN) to inhibit the Electron Transport Chain (ETC).

Answer

Both
tissues rely exclusively on UCP1-mediated proton leak across the inner
mitochondrial membrane to generate heat from the electron transport chain.

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When comparing the cellular mechanisms of heat production in brown adipocytes ve...

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