Textbook Question
Which of the following metabolic processes can occur without a net influx of energy from some other process?
a. ADP + Ⓟi → ATP + H2O
b. C6H12O6 + 6O2 → 6CO2 + 6H2O
c. 6CO2 + 6H2O → C6H12O6 + 6O2
d. Aminoacids →Protein
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7. Energy and Metabolism
Introduction to Metabolism
Multiple Choice
Which of the following correctly states the relationship between anabolic and catabolic pathways?
A
Anabolic pathways break down complex molecules and release energy, while catabolic pathways build molecules and require energy.
B
Both anabolic and catabolic pathways build complex molecules and require energy.
C
Anabolic pathways build complex molecules and require energy, while catabolic pathways break down molecules and release energy.
D
Both anabolic and catabolic pathways break down molecules and release energy.
Verified step by step guidance1
Understand the definitions: Anabolic pathways are processes that build complex molecules from simpler ones, requiring energy input. Catabolic pathways, on the other hand, break down complex molecules into simpler ones, releasing energy.
Analyze the options: The first option states that anabolic pathways break down molecules and release energy, which contradicts the definition of anabolic pathways.
Evaluate the second option: It claims both pathways build molecules and require energy, which is incorrect as catabolic pathways are involved in breaking down molecules.
Consider the third option: It states that anabolic pathways build molecules and require energy, while catabolic pathways break down molecules and release energy. This aligns with the definitions provided.
Review the fourth option: It suggests both pathways break down molecules and release energy, which is incorrect as anabolic pathways are involved in building molecules.
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