Concept explainers
(a)
Interpretation: With the help of given graphical information, the effect of the given change made in reaction conditions on the enzyme activity of enzyme A has to be predicted.
Concept introduction: Most of the enzymes exhibit a narrow maximum activity over a narrow
(b)
Interpretation: With the help of given graphical information, the effect of the given change made in reaction conditions on the enzyme activity of enzyme A has to be predicted.
Concept introduction: Most of the enzymes exhibit a narrow maximum activity over a narrow
(c)
Interpretation: With the help of given graphical information, the effect of the given change made in reaction conditions on the enzyme activity of enzyme A has to be predicted.
Concept introduction: Most of the enzymes exhibit a narrow maximum activity over a narrow
(d)
Interpretation: With the help of given graphical information, the effect of the given change made in reaction conditions on the enzyme activity of enzyme A has to be predicted.
Concept introduction: Most of the enzymes exhibit a narrow maximum activity over a narrow
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GENERAL,ORGANIC,+BIO.CHEM.-MINDTAP
- What is the general role of enzymes in the human body?arrow_forwardDescribe the difference between graphs showing temperature versus reaction rate for an enzyme-catalyzed reaction and an uncatalyzed reaction.arrow_forwardBased on the graphical information in Problem 21-41 about enzymes A and B a. What is the optimum pH for enzyme B? b. What is the optimum temperature for enzyme A? c. Which enzyme has the greater activity at a pH of 7.2? d. Which enzyme has the greater activity at a temperature of 37.2C?arrow_forward
- The site on an enzyme molecule that does the catalytic work is called the: a. binding site. b. allosteric site. c. lock. d. active site.arrow_forwardTo which of the six major classes of enzymes does the enzyme that catalyzes each of the following reactions belong? a. A cis double bond is converted to a trans double bond. a. An alcohol is dehydrated to form a compound with a double bond. b. An amino group is transferred from one substrate to another. c. An ester linkage is hydrolyzed.arrow_forwardThe human body has an average pH of about 7 and a temperature of about 37C. Use graphs to illustrate enzyme activity in the human body as a function of the following: a. Substrate concentration b. Enzyme concentration c. pH include pH optimum value d. Temperature include temperature optimum valuearrow_forward
- Which of the following is not a characteristic of enzymes? a. They are macromolecules. b. They act on substances. c. They are phospholipids. d. They initiate and decelerate chemical reactions. e. They act as catalysts.arrow_forwardDescribe the importance of zymogens in the body. Give an example of an enzyme that has a zymogen.arrow_forwardDraw a graph that shows the effect of increasing substrate concentration on the rate of an enzyme-catalyzed reaction (at constant temperature, pH, and enzyme concentration).arrow_forward
- Why are so many different enzymes needed?arrow_forwardIndicate whether each of the following statements concerning enzymes and their mode of action are true or false. a. According to the induced-fit model of enzyme action, a substrate must be changed into a cofactor before a chemical reaction occurs. b. The active site of an enzyme is the location within the enzyme where catalysis takes place. c. The protein portion of a conjugated enzyme can accommodate several substrates at the same time. d. Simple enzymes do not have active sites, whereas conjugated enzymes do have active sites.arrow_forwardWhy does the body need so many different enzymes?arrow_forward
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