Concept explainers
(a)
Interpretation:
The representation that represents the enzyme-substrate complex should be selected from the following:
Concept Introduction:
Enzymes are defined as a biological catalyst for various reactions in living organisms. Enzymes are like all catalyst as it also increases the rate reaction but they themselves do not change permanently during the process. Enzyme does not alter the position of equilibrium and the relative energy of both the reactant and the products. Reaction, when catalyzed by an enzyme, increases the
(b)
Interpretation:
The representation that represents the competitive inhibition should be selected from the following:
Concept Introduction:
Enzymes are defined as a biological catalyst for various reactions in living organisms. Enzymes are like all catalyst as it also increases the rate reaction but they themselves do not change permanently during the process. Enzyme does not alter the position of equilibrium and the relative energy of both the reactant and the products. Reaction, when catalyzed by an enzyme, increases the rate of reaction by
(c)
Interpretation:
The representation that represents the non-competitive inhibition should be selected from the following:
Concept Introduction:
Enzymes are defined as a biological catalyst for various reactions in living organisms. Enzymes are like all catalyst as it also increases the rate reaction but they themselves do not change permanently during the process. Enzyme does not alter the position of equilibrium and the relative energy of both the reactant and the products. Reaction, when catalyzed by an enzyme, increases the rate of reaction by
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General, Organic, & Biological Chemistry
- Draw 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_forwardThe process by which an enzyme acts on the substrate can be described by the: a. lock-and-key model. b. enzyme-and-substrate model. c. enzyme folding model. d. catalytic model.arrow_forwardWhat is the general role of enzymes in the human body?arrow_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_forwardHow is enzyme specificity explained by the lock-and-key theory?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
- Describe the importance of zymogens in the body. Give an example of an enzyme that has a zymogen.arrow_forwardBased 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_forwardWhat is an enzyme turnover number?arrow_forward
- 21-52 What are the chemical and physiological functions of the COX-2 enzyme?arrow_forwardIn the multienzyme sequence shown below, molecules of D are able to fit to the enzyme E1 and prevent the conversion of A to B. What is this action of E called? AE1BE2CE3D a. effector inhibition b. allosteric inhibition c. feedback inhibition d. competitive inhibition by nonproductarrow_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
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