1. For a reaction A + B → C + D, [A] is 0.8M, [B] is 0.8M, [C] is 0.8M, and [D] is 0.8M. which of the following is true? A. The reaction takes place under the standard conditions B. The free energy change (AG) equals the standard free energy change (AG") C. Both A and B D. Neither A nor B
1. For a reaction A + B → C + D, [A] is 0.8M, [B] is 0.8M, [C] is 0.8M, and [D] is 0.8M. which of the following is true? A. The reaction takes place under the standard conditions B. The free energy change (AG) equals the standard free energy change (AG") C. Both A and B D. Neither A nor B
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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Question
![**Chemical Reactions and Conditions in Biological Systems**
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### 1. Evaluating Reaction Conditions
**Prompt:** For a reaction \( \text{A} + \text{B} \rightarrow \text{C} + \text{D} \), given the concentrations \([A]=0.8M\), \([B]=0.8M\), \([C]=0.8M\), and \([D]=0.8M\), which of the following is true?
**Options:**
- **A.** The reaction takes place under the standard conditions
- **B.** The free energy change (ΔG) equals the standard free energy change (ΔG°')
- **C.** Both A and B
- **D.** Neither A nor B
**Explanation:** This question examines students' understanding of standard conditions in chemical reactions and the relationship between free energy change (ΔG) and standard free energy change (ΔG°'). Standard conditions typically refer to a set concentration of reactants and products, often 1M, among other factors.
---
### 2. Reaction Conditions in Animal Cells
**Prompt:** Under which of the following conditions will the shown reactions A and B most likely take place simultaneously in an animal?
- **Reaction A:** \( \text{Glucose} + \text{ATP} \rightarrow \text{Glucose-6-phosphate} \)
- **Reaction B:** \( \text{Glucose-6-phosphate} + \text{H}_2\text{O} \rightarrow \text{Glucose} + \text{P}_i \)
**Options:**
- **A.** When fructose-1,6-bisphosphatase is inhibited by high levels of fructose-2,6-bisphosphate
- **B.** When skeletal muscle is resting and does not undergo anaerobic glycolysis
- **C.** When an animal undergoes the Cori cycle
- **D.** None of the above
**Explanation:** This question focuses on metabolic pathways and conditions under which certain reactions occur. Reaction A is part of glycolysis or the pentose phosphate pathway, where glucose is phosphorylated to glucose-6-phosphate. Reaction B is the hydrolysis of glucose-6-phosphate to glucose, relevant in gluconeogenesis.
**Discussion Points:**
-](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F83cf1c63-6d62-4d43-b856-80d0ca21ff05%2F77f23ef3-8f7a-4ac4-9c22-1ecaf9143991%2F185xhl_processed.png&w=3840&q=75)
Transcribed Image Text:**Chemical Reactions and Conditions in Biological Systems**
---
### 1. Evaluating Reaction Conditions
**Prompt:** For a reaction \( \text{A} + \text{B} \rightarrow \text{C} + \text{D} \), given the concentrations \([A]=0.8M\), \([B]=0.8M\), \([C]=0.8M\), and \([D]=0.8M\), which of the following is true?
**Options:**
- **A.** The reaction takes place under the standard conditions
- **B.** The free energy change (ΔG) equals the standard free energy change (ΔG°')
- **C.** Both A and B
- **D.** Neither A nor B
**Explanation:** This question examines students' understanding of standard conditions in chemical reactions and the relationship between free energy change (ΔG) and standard free energy change (ΔG°'). Standard conditions typically refer to a set concentration of reactants and products, often 1M, among other factors.
---
### 2. Reaction Conditions in Animal Cells
**Prompt:** Under which of the following conditions will the shown reactions A and B most likely take place simultaneously in an animal?
- **Reaction A:** \( \text{Glucose} + \text{ATP} \rightarrow \text{Glucose-6-phosphate} \)
- **Reaction B:** \( \text{Glucose-6-phosphate} + \text{H}_2\text{O} \rightarrow \text{Glucose} + \text{P}_i \)
**Options:**
- **A.** When fructose-1,6-bisphosphatase is inhibited by high levels of fructose-2,6-bisphosphate
- **B.** When skeletal muscle is resting and does not undergo anaerobic glycolysis
- **C.** When an animal undergoes the Cori cycle
- **D.** None of the above
**Explanation:** This question focuses on metabolic pathways and conditions under which certain reactions occur. Reaction A is part of glycolysis or the pentose phosphate pathway, where glucose is phosphorylated to glucose-6-phosphate. Reaction B is the hydrolysis of glucose-6-phosphate to glucose, relevant in gluconeogenesis.
**Discussion Points:**
-
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