Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 6, Problem 4TY
Summary Introduction
Introduction:
The ATP (adenosine triphosphate) production is vital for the functioning of the various systems and biochemical processes in the cell. The ATP can be generated through aerobic and anaerobic respiration. Several
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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.
Which of the following is NOT true about enzymes?
Enzymes are proteins
Enzymes raise the activation energy of a chemical reaction
Enzymes help a chemical reaction to occur more quickly
Enzymes have an active site
Enzymes may be controlled by feedback inhibition
Which of the following will occur if there is an increase in enzyme or substrate concentration?
interfere with the reaction.
increase the rate of reaction.
decrease the rate of reaction.
not change the rate of product produced
reduce the rate of product produced.
Chapter 6 Solutions
Principles of Biology
Ch. 6.1 - Which do you think has more entropy, an NaCl...Ch. 6.1 - Prob. 1TYKCh. 6.1 - Prob. 2TYKCh. 6.2 - Prob. 1CCCh. 6.2 - Prob. 2CCCh. 6.2 - Prob. 3CCCh. 6.2 - Prob. 1TYKCh. 6.2 - An inhibitor raises the Km for an enzyme but has...Ch. 6.3 - Prob. 1CCCh. 6.3 - Prob. 1TYK
Ch. 6.3 - Prob. 2TYKCh. 6.3 - Prob. 3TYKCh. 6.4 - Prob. 1CCCh. 6.4 - Prob. 1BCCh. 6.4 - Prob. 1TYKCh. 6.4 - Prob. 2TYKCh. 6.4 - Prob. 2CCCh. 6.5 - Prob. 1TYKCh. 6.6 - During the citric acid cycle, what happens to...Ch. 6.7 - Prob. 1CCCh. 6.7 - Prob. 2CCCh. 6.7 - Prob. 3CCCh. 6.7 - Prob. 1TYKCh. 6.7 - Prob. 2TYKCh. 6.7 - Prob. 3TYKCh. 6.8 - Prob. 1CCCh. 6.8 - Prob. 1TYKCh. 6 - According to the second law of thermodynamics....Ch. 6 - Reactions that release free energy are exergonic....Ch. 6 - Prob. 3TYCh. 6 - Prob. 4TYCh. 6 - Prob. 5TYCh. 6 - Prob. 6TYCh. 6 - Prob. 7TYCh. 6 - Prob. 8TYCh. 6 - Prob. 9TYCh. 6 - Prob. 10TYCh. 6 - Describe the mechanism and purpose of feedback...Ch. 6 - What causes the rotation of the y subunit of ATP...Ch. 6 - PRINCIPLES A principle of biology is that living...Ch. 6 - Discuss how life can maintain its order in spite...Ch. 6 - Prob. 2CBQ
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- Which of the following do enzymes change?∆G ; reaction rate; types of product generated; activation energy; the laws ofthermodynamics.arrow_forwardWhich of the following statements about enzyme function is FALSE? Enzymes change shape permanently after a reaction, and can’t be re-used. Enzymes are types of proteins. Enzymes are highly specific molecules. Enzymes lower the activation energy of a reaction. Enzymes bind to substrates a an area called the “active site."arrow_forwardWhich effect of which enzyme inhibitor is shown in the graph? Select one: Irreversible mixed Reversible mixed Reversible uncompetitve Reversible competitive Irreversiblearrow_forward
- 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.arrow_forwardWhich of the following statements about Competitive and noncompetitive inhibition is false? a. A noncompetitive inhibitor does not change the Km of the enzyme. b. A competitive inhibitor does not change the Vmax of the enzyme c. The noncompetitive inhibitor can bind either free enzyme or the enzyme–substrate complex. d.A competitive inhibitor decreases the apparent Km for a given substrate.arrow_forwardWhat is the key activity of Panel II in the figure above? The enzyme is consumed as the products form. The substrate leaves the active site. The conversion of substrates to products occurs. The product leaves the enzyme. The product decomposes to the reactants.arrow_forward
- All of the following are characteristics of the active site of an enzyme EXCEPT? Select the correct response. It has a complementary shape to its substrate. It is the binding site for many different kinds of molecules. It is found somewhere in the interior of the enzyme. It has less water content compared to the cytoplasm.arrow_forwardAll of the following are accurate about enzymes except: A. Enzymes are typically globular proteins with an active site B. Enzymes decrease activation energy C. Enzymes can be used over and over to catalyze a substrate to a product D. Enzymes are versatile and can catalyze different types of chemical reactionsarrow_forwardWhich of the following is/are TRUE of an enzyme? Enzymes lower the release of free energy Enzymes are not consumed in a reaction Not all enzymes are proteins Enzymes only affect endergonic reactions Enzymes only affect exergonic reactionsarrow_forward
- 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 Vmaxarrow_forwardBased on the image attached, what can be concluded from the graph of enzyme activity? A. No enzyme activity recorded at pH 5.0 B. Optimum pH for enzyme activity between pH 5.0 to 5.8 C. The optimum pH for the enzyme is 6.6 D. Decreasing of enzyme activity due to inhibitorarrow_forwardThe active site _______________. a. is the compound that an enzyme reacts with during the chemical reaction.b. is where the reactants bind.c. is another term for “substrate.”d. is the term for an enzyme that has returned to its original state after achemical reaction.arrow_forward
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