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← Nature & AnimalsWhich process enables arctic foxes to produce high-frequency shivers as they encounter ice water?
A)Uncoupled ATP synthase proton gradient
B)Increased mitochondrial membrane permeability
C)Enhanced norepinephrine signal transduction✓
D)Reduced brown adipose tissue insulation
💡 Explanation
When arctic foxes perceive thermal stress, norepinephrine release occurs, stimulating the hypothalamus through signal transduction triggering skeletal muscle contractions to accelerate shivering thermogenesis creating heat output. Therefore enhanced signal transduction causes high frequency shivers, rather than uncoupling ATP, increasing membrane permeability, or reduced BAT, which influence longer-term metabolic adaptations.
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