8. Hexokinase is an enzyme that catalyzes the first step in glycolysis by lowering the activation energy of the reaction. How does an enzyme lower activation energy? a. It stabilizes the transition state b. It couples the reaction to ATP hydrolysis c. It alters the change in free energy d. It destabilizes the products of the reaction 9. Which of the following is a model that describes the optimization of enzyme/substrate binding that results from a conformational change in the structure of the enzyme after the substrate binds to it? a. Lock and Key Model b. Transition State Model c. Induced Fit Model d. Allosteric Inhibition Model
Added by Christopher B.
Close
Step 1
Step 1: Enzymes stabilize the transition state of a reaction by binding to the substrate at their active site. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 73 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
increases lock and key transition state decreases remains about the same substrate enzyme-substrate complex induced fit Enzymes catalyze reaction by stabilizing the . If the enzyme binds to the substrate too well, the activation energy for the catalyzed reaction . Thus, the enzyme binds best to the , and the activation energy . In the model, the enzyme binds to the most efficiently. In the model, both the enzyme and change their structure upon binding in a way that favors the formation of the . Thus, when comparing the models, the model lowers the energy of the transition state more.
Sri K.
Enzymes facilitate chemical reactions that result in changes to a substrate. How does the induced fit model of enzymes and substrates explain their function? a. Both enzyme and substrate undergo dynamic changes, inducing the transitions state of the substrate. b. The enzyme induces a change in the substrate, but is not changed itself during the reaction. c. The substrates attach to the enzyme and the chemical reaction proceeds. d. The enzyme changes shape to fit the substrate causing the transition state to occur.
Christina S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD