FREE AND STUDY GAMES ABOUT BIO 100--QUIZ 5A EXAM

PDF Download

FREE AND STUDY GAMES ABOUT BIO 100--QUIZ 5A EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -14 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?

Answer:

by changing the shape of the enzyme's active site Question 2: The following question is based on the reaction: A + B ? C + D, shown in this figure.Which of the following bests describes the reaction?

Answer:

negative ?G, spontaneous

Question 3: Why is ATP an important molecule in metabolism?

Answer:

It provides energy coupling between exergonic and endergonic reactions.Question 4: Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?

Answer:

competitive inhibition

Question 5: Which of the following is a statement of the first law of thermodynamics?

Answer:

energy cannot be created or destroyed Question 6: T or F- Which of the following statements about enzyme-catalyzed reactions is..

Answer:

The reaction occurs faster than the same reaction in the absence of the enzyme. true Question 7: Some enzymatic regulation is allosteric. In such cases, which of the following would usually be found?

Answer:

an enzyme with more than one subunit Question 8: The mechanism in which the end product of a metabolic pathway inhibits an earlier step in the pathway is best described as..

Answer:

feedback inhibition.Question 9: A chemical reaction that has a positive ?G is correctly described as...

Answer:

endergonic

Question 10: Which of the following is an example of cooperativity?

Answer:

a molecule binding at one unit of a tetramer allowing faster binding at each of the other three Question 11: T or F- Which of the following statements about enzyme-catalyzed reactions is..

Answer:

The free energy change of the reaction is opposite from the reaction in the absence of the enzyme. false Question 12: Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?

Answer:

catabolism

Question 13: The following question is based on the reaction A + B ? C + D shown in this figure.Which of the following represents the difference between the free-energy content of the reaction and the free-energy content of the products?

Answer:

D Question 14: T or F- Which of the following statements about enzyme-catalyzed reactions is..

Answer:

Enzymes slow down the reaction so there is time for it to occur. False