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Question
Biology
Posted 10 months ago
Which reactions in cell respiration are catabolic? Are there any anabolic reactions involved in this metabolic pathway?
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Answer from Sia
Posted 10 months ago
Answer
Catabolic reactions in cell respiration include glycolysis, the citric acid cycle, and the electron transport chain. There are anabolic reactions involved, such as the synthesis of certain intermediates.
Solution
a
Catabolic reactions in cell respiration : These reactions break down molecules to release energy. They include:
b
Glycolysis : This is the process of breaking down glucose into pyruvate, producing ATP and NADH
c
Citric Acid Cycle (Krebs Cycle) : This cycle oxidizes acetyl-CoA to CO2, generating ATP, NADH, and FADH2
d
Electron Transport Chain : This chain transfers electrons from NADH and FADH2 to oxygen, pumping protons to create a gradient used to produce ATP
e
Anabolic reactions in cell respiration : These reactions build up molecules and include the synthesis of intermediates that may be used for biosynthetic pathways
Key Concept
Catabolism and Anabolism in Cell Respiration
Explanation
Catabolic reactions release energy by breaking down complex molecules, while anabolic reactions consume energy to synthesize molecules. Both types of reactions are integral to cell respiration, which is primarily catabolic but includes anabolic steps.

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