Which mechanism causes a groundhog's body temperature to increase as it exits hibernation?

💡 Explanation

When a groundhog exits hibernation, brown fat thermogenesis activates, converting energy into heat by uncoupling oxidative phosphorylation, raising metabolic rate and body temperature. Therefore brown fat thermogenesis results, rather than panting, vasoconstriction, or shivering which are mechanisms for controlling temperature in active animals.

• Which mechanism reduces hydrostatic pressure effects on deep sea fish swim bladders when ascending?
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• Which developmental abnormality results when larval exposure to juvenile hormone analogs induces permanent activation of imaginal discs?
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• Which consequence develops when phloem overshadows xylem within trees?
• Which outcome impairs limb regeneration if 'critical mass' thresholds are not reached in insect imaginal discs following partial amputation in larval stages?