Reactions that break complex molecules into simpler ones and release energy are called:
ACatabolism
BAnabolism
COsmolarity
DChemiosmosis
Answer & Solution
Correct answer: A. Catabolism
1. A cell's metabolism refers to the chemical reactions that occur within it.
2. Those reactions run in two opposite directions.
3. Breaking down complex molecules into simpler ones with a release of energy is catabolism.
4. Building complex molecules, which requires energy, is anabolism.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 6 'Metabolism', sections 6.1-6.5_
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