Endothermic animals can maintain consistent temperature conditions by generating, main- taining, and regulating their body heat. Which of the following describes the most likely mechanism by which endothermic ani- mals generate their body heat? A Chloroplasts that normally produce glucose molecules instead produce heat energy when required. B с D Catabolic reactions that provide usable chemical energy also produce heat. Enzymes that reduce the activation energy apply the energy difference toward heat production. Lysosomes that normally digest nutrients and other intracellular material can be used to initiate apoptosis and thereby generate heat.

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