Which physiological outcome most directly results when hibernating groundhogs experience periodic arousal to 30°C ambient temperature?

💡 Explanation

When a hibernating groundhog arouses, mitochondria in brown fat intensify aerobic respiration because protons bypass ATP synthase through uncoupling protein 1 (UCP1), resulting in heat generation. Therefore, a heightened respiratory rate results, rather than reduced UCP1, shivering inhibition, or minimized vasodilation which mitigate heat production.

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