The following is true regarding enzyme function? Oa. Enzymes increase the rate of chemical reactions by increasing activation energy barriers. b. Enzymes increase the rate of chemical reactions by providing activation energy to the substrate. c. Enzyme function is generally increased if the three- dimensional structure or conformation of an enzyme is altered.

The following is true regarding enzyme function? Oa. Enzymes increase the rate of chemical reactions by increasing activation energy barriers. b. Enzymes increase the rate of chemical reactions by providing activation energy to the substrate. c. Enzyme function is generally increased if the three- dimensional structure or conformation of an enzyme is altered.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 5RQ: Which of the following is not true about enzymes? a. They are consumed by the reactions they...

See similar textbooks

Similar questions

Match the following terms with the best definition. Enzyme Product Substrate Active Site A. A macromolecule serving as a catalyst. B. A material resulting from a chemical reaction. C. The reactant on which an enzyme works. D. Location on an enzyme where the reaction is catalyzed.
Please choose one of these answers A. An allosteric inhibitor appeared B. There was a dramatic change jn the pH. C. The enzyme had achieved its maximum velocity. D. The enzyme had denatured E. A large amount of the substrate had been consumed.
I. True or Flase a. An inhibitor may compete with the substrate for binding to the active site of an enzyme. b. Enzymes increase the rate of a chemical reaction by providing an alternative path with a lower activation energy. c. Enzymes are unconsumed during a reaction and can alter the position of chemical equilibrium.
Which of the following is incorrect? a. Without an enzyme, reaction rate can be increased by increasing the [reactants] b. Enzymes increase reaction rate by bringing the substrates to close proximity A conformational change in an enzyme upon binding of a substrate is called "induced fit" Od. None; all the other choices are correct OC.
Which of the following statements regarding enzymes and metabolic reactions is correct? All enzyme reactions proceed towards a higher entropic state for the products. О а. O b. Enzymes set the pace and direction of metabolic reactions. Enzymes allow endergonic reactions to proceed towards the product by lowering the activation energy Ос. O d. The amount of free energy (AG) in a reaction is dependent on the ratio of the reactants to the products.
The enzyme activity is: A. to The number of grams of substrate that react to form product, per mole of enzyme, per unit of time. b. The number of moles of substrate that react to form product, per gram of enzyme, per unit time. c. The number of moles of substrate that react to form product, per mole of enzyme, per unit time d. The number of grams of substrate that react to form product, per gram of enzyme, per unit of time.
Indicate whether each of the following statements about an enzyme active site is true or false. a. It is the location where substrate molecules are produced. b. It always has a fixed, rigid geometry. c. It always has a geometrical shape exactly complementary to that of substrate. d. It always accomodates several structurally related substrates. e. It is the location where substrate molecules are converted to product molecules. f. It always has a shape that has a degree of flexibility to it. g. it always accomodates only one specific substrate.
Which of the following factors affect enzyme activity? a. All of the mentioned answers are correct O b. Substrate concentration Oc. Temperature O d. pH
Which of the following statements is/are TRUE about the Lock and Key model of enzyme-substrate interaction? I. The active site of the enzyme has flexible conformation. II. Only a certain number of substrates can fit on the enzyme's active site. O Both I and II O Neither I nor II O I only O II only
Characterization of enzyme activity does not allow us to: a. determine how different variables affect the enzyme's ability to function b. determine the molecular composition of the enzyme c. determine the optimal environment for an enzyme to function d. determine the effect of inhibitors on the enzyme
Match the definition to the term: v Choose... Temporary molecule that is formed when substrate attaches to the enzyme Substrate Product Compound that enters the reaction Substance that functions as a biological catalyst Enzyme Specific portion of the enzyme where the substrate attaches Result of enzyme reaction Active Site Enzyme-substrate complex Choose...
Which of the following is a primary function of the active site of an enzyme? a. It binds allosteric regulators of the enzyme. b. It binds noncompetitive inhibitors of the enzyme. c. It catalyzes the reaction associated with the enzyme. d. It is activated by the presence of the end product of the metabolic pathway in which the enzyme is involved. Clear my choice Question 2 Not yet answered Points out of 2.00 Flag question Question text Which of the following statement about the mass spectrometry is true? a. Large amount of protein sample is needed for mass spectrum, and thus it is very expensive. b. It is a powerful method to determine the 3-dimensional structure of proteins. c. It can be sued for protein location in a living cell. d. It can be used to measure the molecular weight of proteins. e. It can be used to determine the stability of a protein structure in solution. Clear my choice…