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5. Which of the following statements is true for the shown reaction? HS-COA CH₂ LAE A B COOH Cool S-COA COOH 3 Y A. Substrate level phosphorylation occurs during the reaction B. Phosphoryl transfer occurs during the reaction C. Both A and B D. Neither A nor B

5. Which of the following statements is true for the shown reaction? HS-COA CH₂ LAE A B COOH Cool S-COA COOH 3 Y A. Substrate level phosphorylation occurs during the reaction B. Phosphoryl transfer occurs during the reaction C. Both A and B D. Neither A nor B

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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### Educational Content on Chemical Reactions #### Question 5: Analysis of the Given Reaction The diagram in the accompanying image shows a chemical reaction involving two molecules labeled as W and Y. The diagram also features an exchange involving coenzyme A (HS-CoA). #### Reaction Description - **Reactant (W)**: - Structure: ``` COOH | CH2 | CH2 | C=O | S-CoA ``` - **Products (A and B)**: - Product (A) remains the same: ``` COOH | CH2 | CH2 | C=O | HS-CoA ``` - Product (B) changes structure: ``` COOH | CH2 | CH2 | COOH ``` #### Question: Which of the following statements is true for the reaction shown? **Options:** A. Substrate level phosphorylation occurs during the reaction B. Phosphoryl transfer occurs during the reaction C. Both A and B D. Neither A nor B --- #### Explanation: - Substrate-level phosphorylation typically refers to the direct synthesis of ATP from ADP and a reactive intermediate. This process is a key step in metabolic pathways such as glycolysis or the citric acid cycle. - Phosphoryl transfer reactions involve the transfer of a phosphoryl group (PO₃²⁻) from one molecule to another. **Analysis**: The provided reaction does not clearly depict any phosphorylation or dephosphorylation events, so both choices A and B might not describe the changes correctly. Given this information, the correct answer might be: **D. Neither A nor B**
Transcribed Image Text:### Educational Content on Chemical Reactions #### Question 5: Analysis of the Given Reaction The diagram in the accompanying image shows a chemical reaction involving two molecules labeled as W and Y. The diagram also features an exchange involving coenzyme A (HS-CoA). #### Reaction Description - **Reactant (W)**: - Structure: ``` COOH | CH2 | CH2 | C=O | S-CoA ``` - **Products (A and B)**: - Product (A) remains the same: ``` COOH | CH2 | CH2 | C=O | HS-CoA ``` - Product (B) changes structure: ``` COOH | CH2 | CH2 | COOH ``` #### Question: Which of the following statements is true for the reaction shown? **Options:** A. Substrate level phosphorylation occurs during the reaction B. Phosphoryl transfer occurs during the reaction C. Both A and B D. Neither A nor B --- #### Explanation: - Substrate-level phosphorylation typically refers to the direct synthesis of ATP from ADP and a reactive intermediate. This process is a key step in metabolic pathways such as glycolysis or the citric acid cycle. - Phosphoryl transfer reactions involve the transfer of a phosphoryl group (PO₃²⁻) from one molecule to another. **Analysis**: The provided reaction does not clearly depict any phosphorylation or dephosphorylation events, so both choices A and B might not describe the changes correctly. Given this information, the correct answer might be: **D. Neither A nor B**
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