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Questions and Answers
What is the rate of reaction when it is independent of substrate concentration?
What is the rate of reaction when it is independent of substrate concentration?
- Second order
- Third order
- Zero order (correct)
- First order
What does Km represent in terms of enzyme-substrate affinity?
What does Km represent in terms of enzyme-substrate affinity?
- Substrate concentration at Vmax
- Affinity for a substrate (correct)
- Enzyme activity
- Rate of reaction
How is a low Km value related to the affinity between enzyme and substrate?
How is a low Km value related to the affinity between enzyme and substrate?
- Moderate affinity
- No affinity
- Neutral affinity
- Strong affinity (correct)
What does a high Km value indicate about the affinity between enzyme and substrate?
What does a high Km value indicate about the affinity between enzyme and substrate?
In which range are the Km values typically found for the majority of enzymes?
In which range are the Km values typically found for the majority of enzymes?
Is the Km value dependent on the concentration of the enzyme?
Is the Km value dependent on the concentration of the enzyme?
What is the enzyme unit based on?
What is the enzyme unit based on?
What does turnover number measure?
What does turnover number measure?
What does specific activity measure?
What does specific activity measure?
Which factor does not affect the rate of enzyme-catalyzed reactions?
Which factor does not affect the rate of enzyme-catalyzed reactions?
At what temperature do most human enzymes start to denature?
At what temperature do most human enzymes start to denature?
How do enzymes speed up biochemical reactions?
How do enzymes speed up biochemical reactions?
What does the Michaelis-Menten equation describe?
What does the Michaelis-Menten equation describe?
What happens when the enzyme concentration is halved in a reaction?
What happens when the enzyme concentration is halved in a reaction?
When is the rate of reaction said to be first order with respect to substrate?
When is the rate of reaction said to be first order with respect to substrate?
Which parameter in the Michaelis-Menten equation is a measure of enzyme efficiency?
Which parameter in the Michaelis-Menten equation is a measure of enzyme efficiency?
What happens to the velocity of the reaction when [S] is much greater than Km?
What happens to the velocity of the reaction when [S] is much greater than Km?
How does halving the enzyme concentration affect Vmax in a reaction?
How does halving the enzyme concentration affect Vmax in a reaction?
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