Concept explainers
(a)
Interpretation: The enzyme denoted by the acronym CPK has to be predicted.
Concept introduction: The concentration of enzymes is useful for obtaining information about a heart attack. The blood levels of the three enzymes commonly assayed in heart attack situation are: creatine phosphokinase (CPK), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH).
(b)
Interpretation: The enzyme denoted by the acronym ALT has to be predicted.
Concept introduction: The concentration of enzymes is useful for obtaining information about a heart attack. The blood levels of the three enzymes commonly assayed in heart attack situation are: creatine phosphokinase (CPK), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH).
Want to see the full answer?
Check out a sample textbook solutionChapter 21 Solutions
General, Organic, and Biological Chemistry
- Describe the importance of zymogens in the body. Give an example of an enzyme that has a zymogen.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_forwardSome enzymes consist of protein plus another component. Which of the terms cofactor or coenzyme correctly describes each of the following nonprotein components? a. an inorganic ion b. a nonspecific component c. an organic material d. nicotinic acid.arrow_forward
- What is an enzyme turnover number?arrow_forwardExplain how the pasteurization of milk utilizes one of the factors that influence enzyme activity.arrow_forwardThe 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_forward
- When handling or storing solutions of enzymes, the pH is usually kept near 7.0. Explain why.arrow_forwardWhich 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_forwardTo which of the six major classes of enzymes does the enzyme that catalyzes each of the following reactions belong? a. An L isomer is converted to a D isomer. a. A phosphate group is transferred from one substrate to another. b. An amide linkage is hydrolyzed. c. Hydrolysis of a carbohydrate to monosaccharides occurs.arrow_forward
- Based on the graphical information in Problem 21-41 about enzymes A and B indicate whether the enzyme activity of enzyme B increases or decreases when the following changes in reaction conditions are made. a. pH decreases from 7.6 to 7.2 b. pH increases from 7.2 to 7.4 c. temperature decreases from 37.8C to 37.6C d. temperature increases from 38.2C to 38.4Carrow_forwardWhy are enzymes that are used for laboratory or clinical work stored in refrigerators?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
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningWorld of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College Div