Multiple Choice
What is the role of the electron transport chain in the process of photosynthesis?
3. Acids and Bases
Organic Chemistry Reactions
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Which of the following statements about enzymes in organic chemistry reactions is incorrect?
A
Enzymes are consumed in the reactions they catalyze.
B
Enzymes lower the activation energy of a reaction.
C
Enzymes act as catalysts to speed up chemical reactions.
D
Enzymes are specific to the substrates they bind.
Verified step by step guidance1
Understand the role of enzymes in organic chemistry: Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
Examine the statement 'Enzymes are consumed in the reactions they catalyze': This statement is incorrect because enzymes are not consumed; they remain unchanged after the reaction.
Consider the statement 'Enzymes lower the activation energy of a reaction': This is correct as enzymes provide an alternative pathway with lower activation energy, facilitating the reaction.
Evaluate the statement 'Enzymes act as catalysts to speed up chemical reactions': This is correct because enzymes increase the rate of reaction by lowering the activation energy.
Analyze the statement 'Enzymes are specific to the substrates they bind': This is correct as enzymes have specific active sites that bind to particular substrates, ensuring specificity in the reactions they catalyze.
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