Arkansas Esthetician Practice Exam

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What phase of metabolism causes a release of energy within the cell?

Anabolism
Catabolism
Tissue regeneration
Muscular development

The correct answer is: Catabolism

Catabolism is indeed the correct phase of metabolism that causes a release of energy within the cell. This process involves the breakdown of complex molecules into simpler ones, which releases energy that the cell can utilize for various functions. The energy released during catabolic reactions is critical for maintaining cellular processes, such as synthesis of molecules, transport of substances, and muscle contractions. In contrast, anabolism is the phase of metabolism that builds complex molecules from simpler ones, consuming energy in the process. Tissue regeneration and muscular development are biological processes that can involve both catabolic and anabolic reactions, but they are not specifically phases of metabolism associated with the release of energy within the cell.