Multiple Choice
How do heterotrophs obtain their energy?
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7. Energy and Metabolism
Introduction to Metabolism
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Which statement about catabolic pathways is true?
A
Catabolic pathways require energy input to proceed.
B
Catabolic pathways are involved in the synthesis of proteins.
C
Catabolic pathways release energy by breaking down complex molecules.
D
Catabolic pathways build complex molecules from simpler ones.
Verified step by step guidance1
Understand the definition of catabolic pathways: Catabolic pathways are metabolic processes that break down complex molecules into simpler ones, releasing energy in the process.
Identify the key characteristic of catabolic pathways: They are primarily involved in the breakdown of molecules, not the synthesis or building of complex molecules.
Recognize the energy aspect: Catabolic pathways release energy, which is often captured in the form of ATP (adenosine triphosphate), rather than requiring energy input.
Differentiate between catabolic and anabolic pathways: Anabolic pathways are responsible for building complex molecules from simpler ones and typically require energy input.
Evaluate the statements given in the problem: The correct statement is that catabolic pathways release energy by breaking down complex molecules, aligning with the definition and characteristics of catabolic processes.
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