Multiple Choice
Which of the following enzymes converts ATP to cAMP?
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6. Enzymes and Enzyme Kinetics
Enzymes
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Which statement best defines enzymatic activity?
A
It is the rate at which an enzyme converts substrate into product.
B
It is the process by which enzymes are synthesized in the ribosome.
C
It is the amount of enzyme present in a cell.
D
It is the ability of an enzyme to bind to any molecule.
Verified step by step guidance1
Understand the concept of enzymatic activity: Enzymatic activity refers to the rate at which an enzyme catalyzes the conversion of a substrate into a product. This is a measure of how efficiently an enzyme performs its function in a biochemical reaction.
Eliminate incorrect options: Review each statement provided in the problem and determine whether it aligns with the definition of enzymatic activity. For example, 'the process by which enzymes are synthesized in the ribosome' refers to protein synthesis, not enzymatic activity.
Focus on the correct definition: The correct statement should describe the rate of substrate conversion into product, as this is the hallmark of enzymatic activity. Other options, such as 'the amount of enzyme present in a cell' or 'the ability of an enzyme to bind to any molecule,' do not accurately define enzymatic activity.
Relate enzymatic activity to reaction kinetics: Enzymatic activity is often quantified using parameters like the Michaelis-Menten constant (Km) and maximum velocity (Vmax), which describe how efficiently an enzyme interacts with its substrate and catalyzes the reaction.
Conclude with the correct statement: Based on the analysis, the correct definition of enzymatic activity is 'It is the rate at which an enzyme converts substrate into product.' This aligns with the biochemical understanding of enzyme function.
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