QQuestionBiochemistry
QuestionBiochemistry
"An enzyme can only bind one reactant at a time.
True or False
A. True
B. False"
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Answer
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Step 1:Let me solve this problem step by step:
Step 2:: Understand the Concept of Enzyme Binding
- Enzymes are proteins that catalyze biochemical reactions - They have an active site where substrates (reactants) bind - The key consideration is how many reactants can bind simultaneously
Step 3:: Analyze Enzyme-Substrate Interaction
- Most enzymes have a single active site - This means only one substrate molecule can bind at a time - The enzyme-substrate complex forms temporarily during the reaction - After catalyzing the reaction, the enzyme releases the product and can bind another substrate
Step 4:: Evaluate the Statement
- The statement "An enzyme can only bind one reactant at a time" is scientifically accurate - This is a fundamental principle of enzyme kinetics known as the "lock and key" or "induced fit" model - The single active site restricts simultaneous binding of multiple reactants
Step 5:: Select the Correct Answer
- The statement is TRUE - Therefore, the correct answer is: A. True
Final Answer
True The statement is correct because enzymes typically have a single active site that allows binding of only one substrate molecule at a time during a catalytic cycle.
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