Which outcome occurs when polar bear cubs lack sufficient brown fat during arctic storms?

💡 Explanation

Newborn cubs rely on thermogenesis from brown fat stores but insufficient amounts trigger shivering, generating metabolic heat because muscle contractions burn energy. Therefore shivering increases, rather than other metabolic changes, to compensate for low brown fat storage, despite energy cost.

• Which consequence occurs when a holometabolous insect larva is prematurely exposed to ecdysone during its feeding larval stage?
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• Which risk is increased when prothoracic gland activity sharply increases?
• Which function is served by inhibitory signals from larval tissue during insect metamorphosis before imaginal disc differentiation?
• Which functional shift induces pupation after certain larval stages?
• Which outcome occurs when increased atmospheric back-pressure impacts plant transpiration?