Multiple Choice
Which of the following statements correctly describes metabolic pathways?
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7. Energy and Metabolism
Introduction to Metabolism
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Which of the following is false about the relationship between catabolism and anabolism?
A
Anabolism builds complex molecules and requires energy.
B
Both catabolism and anabolism are part of metabolism.
C
Catabolism breaks down molecules to release energy.
D
Catabolism and anabolism are unrelated processes.
Verified step by step guidance1
Understand the definitions of catabolism and anabolism: Catabolism involves breaking down complex molecules into simpler ones, releasing energy in the process. Anabolism, on the other hand, involves building complex molecules from simpler ones, which requires energy.
Recognize that both catabolism and anabolism are integral parts of metabolism. Metabolism encompasses all chemical reactions in a living organism, including both energy-releasing and energy-consuming processes.
Evaluate the statement 'Anabolism builds complex molecules and requires energy.' This is true because anabolism involves synthesis reactions that require energy input, often in the form of ATP.
Evaluate the statement 'Catabolism breaks down molecules to release energy.' This is true because catabolic reactions involve the breakdown of molecules, releasing energy that can be used by the cell.
Evaluate the statement 'Catabolism and anabolism are unrelated processes.' This is false because catabolism and anabolism are interconnected processes within metabolism, where the energy released from catabolism can be used to drive anabolic reactions.
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