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What factors determine whether a chemical reaction is spontaneous or not?
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7. Energy and Metabolism
Chemical Reactions
객관식
Which of the following chemical reactions is catabolic?
A
The synthesis of proteins from amino acids
B
The formation of glycogen from glucose
C
The breakdown of glucose during glycolysis
D
The conversion of fatty acids into triglycerides
검증된 단계별 안내1
Step 1: Understand the concept of catabolic reactions. Catabolic reactions involve the breakdown of larger molecules into smaller ones, releasing energy in the process. These reactions are typically exergonic (energy-releasing).
Step 2: Analyze the given options. Identify which reactions involve the breakdown of molecules versus the synthesis (building up) of molecules. Synthesis reactions are anabolic, while breakdown reactions are catabolic.
Step 3: Evaluate the synthesis of proteins from amino acids. This is an anabolic reaction because it involves building larger protein molecules from smaller amino acid units.
Step 4: Evaluate the formation of glycogen from glucose. This is also an anabolic reaction because it involves the synthesis of glycogen, a larger storage molecule, from smaller glucose units.
Step 5: Evaluate the breakdown of glucose during glycolysis. This is a catabolic reaction because it involves breaking down glucose into smaller molecules (pyruvate), releasing energy in the form of ATP. The conversion of fatty acids into triglycerides is anabolic, as it involves building larger triglyceride molecules from smaller fatty acid units.
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