Answer these questions please. What docs an allosteric inhibitor molecule do?O It causes the active site of an enzyme to have a high affinity for its substrate.O It causes the active site of an enzyme to have a low affinity for its substrate.O It binds irreversibly to the active site of an enzyme.It stimulates enzyme activity. Which statement describes enzyme inhibitors?O They bind to the active site of an enzyme and decrease its activity.O They block access to the substrate and slow the rate of the reaction.O They change the shape of an enzyme reducing its ability to bind efficiently.O All of the above.

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Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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T/F Both competitive and noncompetitive inhibitors bind reversibly to an enzyme (E), thereby inhibiting its activity. These two kinds of inhibitors share the same site on the enzyme.
An allosteric inhibitor does which of the following? a. Binds to an enzyme away from the active site and changes the conformation of the active site, increasing its affinity for substrate binding. b. Binds to the active site and blocks it from binding substrate. c. Binds to an enzyme away from the active site and changes the conformation of the active site, decreasing its affinity for the substrate. d. Binds directly to the active site and mimics the substrate.
Assume that an inhibitor (I) can bind to an enzyme and is modified by the enzyme. The modified inhibitor (I*) is then permanently associated with the active site of the enzyme, thus inhibiting the enzyme activity. Such inhibitors are called: Suicide substrates Transition-state analogs Both A and B Neither A nor Bwhich answer choice is correct im confused... thx
Molecule X is expected to be a non-competitive inhibitor of an enzyme. If the inhibitor was tested at a saturating level of substrate the following would be observed: a. The inhibitor would decrease the Vmax b. The inhibitor would increase the Km c. The inhibitor would decrease the Km d. The inhibitor would increase the Vmax e. The inhibitor would not change the Vmax
The statement that is not true about enzymes is...A. works optimally if it is in accordance with the required pHB. has active sites where enzyme reactions with substrates occurC. can work in all reaction temperature rangeD. can only work for certain reactionsE. is strongly influenced by reaction temperature
The reason for the increase in the rate of an enzyme reaction when the temperature is increased isa. decrease in kinetic energy of reactantb. increase in kinetic energy of reactantc. increase in activation energy of reactiond. decrease in activation energy of reaction
What is true about a competitive inhibitor of an enzyme? You can choose more than one a. it binds the active site b. it binds an allosteric site c. it physically blocks the substrate d. it warps the active site e. it can be overcome with large amounts of substrate
Classify the items as competitive or noncompetitive inhibitors for control of enzyme action. Bind to the allosteric site on the enzyme Not influenced by the concentration of substrate Resemble the substrate Do not resemble thhe substrate Bind to active site of the enzyme
Match with the given reaction A. The reaction with a non-competitive inhibitorB. The reaction without inhibitorC. The reaction with competitive inhibitorD. The reaction with the fastest reaction
In which of the following does an inhibitor bind to an allostericsite on an enzyme?a. competitive inhibitionb. noncompetitive inhibitionc. redox reactionsd. None of the above are correct.
What type of inhibition is occurring when the end product stops the action of the first enzyme in the video on feedback inhibition found below: https://www.youtube.com/watch?v=qHb7iieM2Ro Select one: a. competitive b. non-competitive c. Both competitive and non-competitive inhibition are illustrated in this video/figure
Choose only the letter, no explanation needed. Enzyme activity is affected by a variety of factors. What factor causes the enzyme to denature if it becomes extremely high? * Choices: A. Water's Effect B. pH C. Temperature D. Activator's Effect An inhibitor binds to the enzyme's active site, preventing the substrate from binding to it. What conclusions can you make from this situation? * A. No reaction occurred B. Non-competitive inhibition occurred C. Enzyme activity occurred D. Competitive inhibition occurred Each enzyme is very selective when it comes to its substrate. What can you conclude from this statement? * A. Any substrate can bind to the active site. B. Enzymes are used up in the reaction. C. Only a specific substrate can bind to the active site. D. Enzymes break down when not used. Lock : Key :: Active Site : _____________________________ * A. Substrate B. Active Site C. Coenzyme D. Cofactor Enzymes only speed up biological functions, so they are NOT used up in the…

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