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If an enzyme is determined to have a low Km what does that say about the reaction?
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3. Energy
Enzyme Kinetics
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Which of the following terms describes how rapidly a substrate can undergo a reaction?
A
Kinetics
B
Turnover Number
C
Saturation Rate
D
Reaction Speed
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Understand the context of the problem: The question is asking about a term that describes the rate at which a substrate undergoes a reaction.
Identify the key terms: 'Kinetics', 'Turnover Number', 'Saturation Rate', and 'Reaction Speed'.
Define 'Turnover Number': In enzymology, the turnover number (k_cat) is the maximum number of substrate molecules converted to product per enzyme molecule per unit of time when the enzyme is fully saturated with substrate.
Differentiate between the terms: 'Kinetics' is a broad term that refers to the study of the rates of chemical processes. 'Saturation Rate' refers to the point at which an increase in substrate concentration no longer increases the rate of reaction. 'Reaction Speed' is a general term that can refer to how fast a reaction occurs but is not specific to enzymatic reactions.
Conclude that 'Turnover Number' is the specific term that describes how rapidly a substrate can undergo a reaction in the context of enzyme activity.
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