Podcast
Questions and Answers
Which enzyme, glucokinase or hexokinase, has a lower Vmax?
Which enzyme, glucokinase or hexokinase, has a lower Vmax?
- Both have the same Vmax
- Glucokinase (correct)
- It is not mentioned in the text
- Hexokinase
Which enzyme, glucokinase or hexokinase, has a lower Km?
Which enzyme, glucokinase or hexokinase, has a lower Km?
- It is not mentioned in the text
- Glucokinase
- Both have the same Km
- Hexokinase (correct)
Which enzyme, glucokinase or hexokinase, is turned off by high concentrations of glucose-6-P?
Which enzyme, glucokinase or hexokinase, is turned off by high concentrations of glucose-6-P?
- Hexokinase
- It is not mentioned in the text
- Glucokinase (correct)
- Both enzymes are turned off by glucose-6-P
What same reaction do both hexokinase and glucokinase catalyze?
What same reaction do both hexokinase and glucokinase catalyze?
Which enzyme, glucokinase or hexokinase, has a higher Km and is active even during fasting?
Which enzyme, glucokinase or hexokinase, has a higher Km and is active even during fasting?
Which enzyme, glucokinase or hexokinase, becomes active after a high-carbohydrate meal?
Which enzyme, glucokinase or hexokinase, becomes active after a high-carbohydrate meal?
What is the main role of the enzyme glucokinase?
What is the main role of the enzyme glucokinase?
Which enzyme is found in the liver?
Which enzyme is found in the liver?
Why can't other tissues convert excess glucose to glycogen?
Why can't other tissues convert excess glucose to glycogen?
Which enzyme, glucokinase or hexokinase, is inhibited by glucose-6-P?
Which enzyme, glucokinase or hexokinase, is inhibited by glucose-6-P?
Which type of enzyme inhibition occurs when the inhibitor forms a covalent bond with the active site of the enzyme?
Which type of enzyme inhibition occurs when the inhibitor forms a covalent bond with the active site of the enzyme?
Which type of enzyme inhibition competitively inhibits the enzyme that helps convert folate (B9) into its coenzyme form?
Which type of enzyme inhibition competitively inhibits the enzyme that helps convert folate (B9) into its coenzyme form?
In reversible enzyme inhibition, which type of inhibition does not change the maximum velocity (Vmax) of the reaction?
In reversible enzyme inhibition, which type of inhibition does not change the maximum velocity (Vmax) of the reaction?
In reversible enzyme inhibition, does the affinity of the enzyme appear to go up or down in the presence of the inhibitor?
In reversible enzyme inhibition, does the affinity of the enzyme appear to go up or down in the presence of the inhibitor?
Which type of enzyme inhibition results in no product formation even in the presence of substrate?
Which type of enzyme inhibition results in no product formation even in the presence of substrate?
In reversible enzyme inhibition, is the maximum velocity (Vmax) lower or higher in the presence of the inhibitor?
In reversible enzyme inhibition, is the maximum velocity (Vmax) lower or higher in the presence of the inhibitor?
In reversible enzyme inhibition, does the affinity of the enzyme appear to go up or down in the presence of the inhibitor?
In reversible enzyme inhibition, does the affinity of the enzyme appear to go up or down in the presence of the inhibitor?
Which type of enzyme inhibition occurs when the inhibitor binds to the enzyme or the enzyme-substrate complex?
Which type of enzyme inhibition occurs when the inhibitor binds to the enzyme or the enzyme-substrate complex?
In reversible enzyme inhibition, does the maximum velocity (Vmax) change in the presence of the inhibitor?
In reversible enzyme inhibition, does the maximum velocity (Vmax) change in the presence of the inhibitor?
In reversible enzyme inhibition, does the affinity of the enzyme appear to go up or down in the presence of the inhibitor?
In reversible enzyme inhibition, does the affinity of the enzyme appear to go up or down in the presence of the inhibitor?
Which of the following defines Km and Vmax?
Which of the following defines Km and Vmax?
Which of the following reactions conforms to Michaelis-Menten kinetics?
Which of the following reactions conforms to Michaelis-Menten kinetics?
What is the difference between glucokinase and hexokinase?
What is the difference between glucokinase and hexokinase?
What does Kcat represent?
What does Kcat represent?
Which of the following is an example of a physiologically efficient enzyme and its role?
Which of the following is an example of a physiologically efficient enzyme and its role?
How can we determine the Km and Vmax of an enzyme using Michaelis-Menten kinetics?
How can we determine the Km and Vmax of an enzyme using Michaelis-Menten kinetics?
What is the difference between reversible and irreversible enzyme inhibition?
What is the difference between reversible and irreversible enzyme inhibition?
What is the difference between competitive, uncompetitive, and non-competitive inhibition?
What is the difference between competitive, uncompetitive, and non-competitive inhibition?
How does the graph of an allosteric enzyme in the presence of an inhibitor differ from the graph in the absence of an inhibitor?
How does the graph of an allosteric enzyme in the presence of an inhibitor differ from the graph in the absence of an inhibitor?
Which of the following best defines Km in Michaelis-Menten kinetics?
Which of the following best defines Km in Michaelis-Menten kinetics?
Which of the following best describes a first-order reaction?
Which of the following best describes a first-order reaction?
Which of the following best describes a zero-order reaction?
Which of the following best describes a zero-order reaction?
What can we use a Lineweaver-Burk plot for?
What can we use a Lineweaver-Burk plot for?
Which of the following best defines Kcat?
Which of the following best defines Kcat?
Which of the following best describes reversible enzyme inhibition?
Which of the following best describes reversible enzyme inhibition?
Which of the following best describes irreversible enzyme inhibition?
Which of the following best describes irreversible enzyme inhibition?
Which of the following best describes allosteric inhibition?
Which of the following best describes allosteric inhibition?
Which of the following best describes competitive inhibition?
Which of the following best describes competitive inhibition?
Which of the following best describes uncompetitive inhibition?
Which of the following best describes uncompetitive inhibition?
