### Educational Content on Chemical Reactions#### Question 5: Analysis of the Given ReactionThe 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**

The product of glycolysis, pyruvate is converted to acetyl CoA. Acetyl CoA enters the cycle by…

Answered: 5. Which of the following statements is…

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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2. How many ATP molecules are generated during the complete oxidative degradation of each of the following to CO2 and H2O? a. Lactate b. PEP c. Glucose d. Glycerol e. Glyceraldehyde 3-P
The reaction below catalyzed by phosphoglycerate mutase is, 3-phosphoglycerate 2-phosphoglycerate an isomerization. A. В. a group transfer reaction. a reversed aldol condenstion. C. Op an oxidation reduction reaction. E. Cand D
21. How many carbons are removed from fatty acyl CoA in one turn of B-oxidation spiral? E. 6 22. B-oxidation of fatty acids is promoted by which of the followings? D. Acetyl CoA A. 1 С. З D. 4 B. 2 A. ATP B. NAD+ C. FADH2 E. Propionyl CoA
14. Which of the following statements is true for the shown reaction? P-O-CH₂ HOO-P ក្រុង D P-O-CH₂ OH MOTHE OH ночно HO OH B A A. Stimulation of the reaction slows down glycolysis B. The reaction is the rate-limiting step of gluconeogenesis C. Both A and B D. Neither A nor B
9. Which of the following statements is/are correct for the shown reaction? A CHg-c-s-col + CO - C-CH₂-C-S-COA A. The reaction occurs in the mitochondria B. The small molecule in box a is GTP C. The reaction is a committed step for fatty acid catabolism D. The reaction requires biotin E. None of the above
8. The structure of citrate is shown below. The carbon atoms in this citrate are numbered 1 to 6. Assume that carbon atoms 1 and 6 are the two carbon atoms to be given off as CO₂ in the citric acid cycle. Which carbon atoms in the shown structure are came from acetyl-CoA? 'COOH 2 CH₂ HO-3³C-COOH I CH₂ 5COOH A. 1 and 2 B. 2 and 3 C. 3 and 6 D. 3 and 4 E. 4 and 5 9. Which of the following statements is/are correct for the shown reaction? 回 CHg-c-s-Con + Co A B A. The reaction occurs in the mitochondria B. The small molecule in box a is GTP C-CH₂-C-S-COA -S-COA C. The reaction is a committed step for fatty acid catabolism D. The reaction requires biotin E. None of the above
1. Why is the chemical logic behind the phosphorylation of glucose by hexokinase? a. So that we end the preparatory phase with 2 3-carbon compounds. b. to provide a substrate for phosphohexose isomerase. c. "Locks" Glucose in the cell. d. to decrease the ΔG of the next reaction. 2. What type of reaction does glyceraldehyde-3-phosphate dehydrogenase catalyze? a. isomerization b. group transfer c. oxidation d. dehydration
A. 11 Matching the following answers with the statements regarding beta oxidation of a 22 carbon fatty acid. B. 170 D. v Number of acetyl coA produced C. 172 C. v Number of passes through the R-oxidation pathway D. 10 A. v Number of ATP produced B. v Net ATP produced Click Save and Submit to save and submit. Click Save All Answers to save all answers. +Do F3 Esc F4 F5 F6 F7 F8 F9 FI F2 %23 & 3 4 5 6 080 T. U A S F G H. 6, R
14. How many cycles of O-H-O-T would it take to complete the B-oxidation of an 18-C fatty acid? a. 6 b. 7 c. 8 d. 9 15. Which lipid metabolism pathway does NOT involve acetvI-CoA? a. lipogenesis b. ketogenesis c. both a and b d. neither a nor b 16. How is fatty acyl-CoA transported from the cytosol into the mitochondrial matrix? a. via CPT I and II b. via citrate-malate transport system c. via lipoproteins d. via albumin
Beside each compound listed, indicate what stage or stages of cellular respiration it is associated with by placing an 'X' in each applicable box. Compound Glycolysis Pyruvate Oxidation Kreb's Cycle ETC/Chemiosmosis a. ATP b. Acetyl-CoA c. Citric Acid d. Coenzyme A e. Glucose f. Pyruvate g. FADH2 h. ATP synthase i. CO2 j. H2O k. O2
8. The structure of citrate is shown below. The carbon atoms in this citrate are numbered 1 to 6. Assume that carbon atoms 1 and 6 are the two carbon atoms to be given off as CO₂ in the citric acid cycle. Which carbon atoms in the shown structure are came from acetyl-CoA? 'COOH 21 HO-³C-COOH I HCH₂ 5 COOH A. 1 and 2 B. 2 and 3 C. 3 and 6 D. 3 and 4 E. 4 and 5
2

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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