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Select the statement that is false: Enzymes decrease the activation energy of the reaction they catalyze. Enzymes decrease the overall free energy change of the reaction they catalyze. Most enzymes are highly specific for their substrates. The activities of many enzymes are regulated.

Select the statement that is false: Enzymes decrease the activation energy of the reaction they catalyze. Enzymes decrease the overall free energy change of the reaction they catalyze. Most enzymes are highly specific for their substrates. The activities of many enzymes are regulated.

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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Question
Please select the statement that is false
**Quiz Question: Understanding Enzyme Functions** --- **Question:** Select the statement that is false: - ○ Enzymes decrease the activation energy of the reaction they catalyze. - ○ Enzymes decrease the overall free energy change of the reaction they catalyze. - ○ Most enzymes are highly specific for their substrates. - ○ The activities of many enzymes are regulated. **Explanation:** *Enzymes and Their Functions:* Enzymes are biological catalysts that speed up chemical reactions in living organisms. They achieve this by lowering the activation energy required for a reaction to proceed, without being consumed in the process. Here, we test your understanding of fundamental enzyme characteristics. **Statements Analysis:** 1. **Enzymes decrease the activation energy of the reaction they catalyze.** - True. Enzymes lower the activation energy, making it easier for the reaction to occur. 2. **Enzymes decrease the overall free energy change of the reaction they catalyze.** - False. Enzymes do not alter the overall free energy change (ΔG) of the reaction; they only lower the activation energy. 3. **Most enzymes are highly specific for their substrates.** - True. Enzymes have a high degree of specificity, meaning they typically interact with particular substrates to catalyze specific reactions. 4. **The activities of many enzymes are regulated.** - True. Many enzymes are regulated by factors such as pH, temperature, and the presence of inhibitors or activators to ensure proper cellular function. **Conclusion:** Based on this analysis, the false statement is: "Enzymes decrease the overall free energy change of the reaction they catalyze." Understanding these concepts is crucial for comprehending how enzymes facilitate various biochemical processes within the cell.
Transcribed Image Text:**Quiz Question: Understanding Enzyme Functions** --- **Question:** Select the statement that is false: - ○ Enzymes decrease the activation energy of the reaction they catalyze. - ○ Enzymes decrease the overall free energy change of the reaction they catalyze. - ○ Most enzymes are highly specific for their substrates. - ○ The activities of many enzymes are regulated. **Explanation:** *Enzymes and Their Functions:* Enzymes are biological catalysts that speed up chemical reactions in living organisms. They achieve this by lowering the activation energy required for a reaction to proceed, without being consumed in the process. Here, we test your understanding of fundamental enzyme characteristics. **Statements Analysis:** 1. **Enzymes decrease the activation energy of the reaction they catalyze.** - True. Enzymes lower the activation energy, making it easier for the reaction to occur. 2. **Enzymes decrease the overall free energy change of the reaction they catalyze.** - False. Enzymes do not alter the overall free energy change (ΔG) of the reaction; they only lower the activation energy. 3. **Most enzymes are highly specific for their substrates.** - True. Enzymes have a high degree of specificity, meaning they typically interact with particular substrates to catalyze specific reactions. 4. **The activities of many enzymes are regulated.** - True. Many enzymes are regulated by factors such as pH, temperature, and the presence of inhibitors or activators to ensure proper cellular function. **Conclusion:** Based on this analysis, the false statement is: "Enzymes decrease the overall free energy change of the reaction they catalyze." Understanding these concepts is crucial for comprehending how enzymes facilitate various biochemical processes within the cell.
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