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Nature & Animals

Which outcome accompanies the release of norepinephrine activating uncoupling protein 1 (UCP1) in a hibernating mammal's brown adipose tissue?

A)Non-shivering thermogenesis raises body temperature
B)Glycogenesis generates ATP for muscle movement
C)Lipogenesis stores triglycerides for lean mass
D)Vasoconstriction prevents core heat expenditure

💡 Explanation

The uncoupling protein 1 (UCP1) activation increases mitochondrial membrane permeability, resulting in heat production through non-shivering thermogenesis rather than ATP production because protons leak from the mitochondrial membrane. Therefore, core body temperature increases rather than metabolic fuel reserves increasing.

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