Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 8.4, Problem 18AYP
Define amphibolism.
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Kinetics: One-Compartment First-Order Absorption
1. In vivo testing provides valuable insight into a drug’s kinetics. Assessing drug kinetics following multiple routes of administration provides greater insight than a single route of administration alone. The following data was collected in 250-g rats following bolus IV, oral (PO), and intraperitoneal (ip) administration.
Using this data and set of graphs, determine:(calculate for each variable)
(a) k, C0, V, and AUC* for the bolus iv data
(b) k, ka, B1, and AUC* for the po data
c) k, ka, B1, and AUC* for the ip data
(d) relative bioavailability for po vs ip, Fpo/Fip
(e)absolute ip bioavailability, Fip
(f) absolute po bioavailability, Fpo
3. A promising new drug is being evaluated in human trials. Based on preliminary human tests, this drug is most effective when plasma levels exceed 30 mg/L. Measurements from preliminary tests indicate the following human pharmacokinetic parameter values: t1/2,elim = 4.6hr, t1/2,abs = 0.34hr, VD = 0.29 L/kg, Foral = 72%. Based on these parameters, estimate the following if a 49 kg woman were to receive a 1000mg oral dose of this drug:
(a) Estimate the plasma concentration of the drug at 1hr, 6 hr, and 20hr after taking the drug ( Concentration estimate)
(b) Estimate the time for maximum plasma concentration (tmax).
(c) Estimate the maximum plasma concentration (Cmax).
(d) Estimate the time at which the plasma level first rises above 30 mg/L. (Note this is a trial and error problem where you must guess a time, plug it into the concentration equation, and determine if it is close to 30 mg/L. Hint: based on part (a) it should be apparent that the answer is less than 1hr.)
(e)…
Chapter 8 Solutions
Microbiology: A Systems Approach
Ch. 8.1 - Describe the relationship among metabolism,...Ch. 8.1 - Fully discuss the structure and function of...Ch. 8.1 - Differentiate between an apoenzyme and a...Ch. 8.1 - Differentiate between an endoenzyme and an...Ch. 8.1 - Diagram the four major patterns of metabolism.Ch. 8.1 - Describe how enzymes are controlled.Ch. 8.2 - Name the chemical in which energy is stored in...Ch. 8.2 - Create a general diagram of a redox reaction.Ch. 8.2 - Identify electron carriers used by cells.Ch. 8.3 - List three basic catabolic pathways and the...
Ch. 8.3 - Construct a paragraph summarizing glycolysis.Ch. 8.3 - Describe the Krebs cycle and compare the process...Ch. 8.3 - Discuss the significance of the electron transport...Ch. 8.3 - State two ways in which anaerobic respiration...Ch. 8.3 - Summarize the steps of microbial fermentation and...Ch. 8.3 - Prob. 16AYPCh. 8.4 - Prob. 17AYPCh. 8.4 - Define amphibolism.Ch. 8.5 - Summarize the overall process of photosynthesis in...Ch. 8.5 - Discuss the relationship between light-dependent...Ch. 8.5 - Explain the role of the Calvin cycle in the...Ch. 8 - Prob. 1MCQCh. 8 - An enzyme a. becomes part of the final products....Ch. 8 - An apoenzyme is where the ____ is located. a....Ch. 8 - Many coenzymes are a. metals. b. vitamins. c....Ch. 8 - Prob. 5MCQCh. 8 - Energy is carried from catabolic to anabolic...Ch. 8 - A product or products of glycolysis is/are a. ATP....Ch. 8 - Prob. 8MCQCh. 8 - Complete oxidation of glucose in aerobic...Ch. 8 - ATP synthase complexes can generate ______ ATP(s)...Ch. 8 - True-False Questions. If the statement is true,...Ch. 8 - An enzyme lowers the activation energy required...Ch. 8 - One cycle of fermentation yields more energy than...Ch. 8 - Energy in biological systems is primarily...Ch. 8 - Exoenzymes are produced outside the cell.Ch. 8 - Prob. 1CTQCh. 8 - Prob. 2CTQCh. 8 - Compare and contrast the processes of...Ch. 8 - Draw a bacterial cell and a eukaryotic cell side...Ch. 8 - Provide evidence in support of or refuting the...Ch. 8 - From chapter 4, figure 4.16. On the enlarged...Ch. 8 - Using the words that follow, please create a...
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