CAMPBELL BIOLOGY:CONCEPTS+CONNECTIONS
10th Edition
ISBN: 9780136538875
Author: Taylor
Publisher: INTER PEAR
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Chapter 5, Problem 14TYK
SCIENTIFIC THINKING Mercury is known to inhibit the permeability of water channels. To help establish that the protein isolated by Agre’s group was a water channel (see Module 5.7), the researchers incubated groups of RNA-injected oocytes (which thus made aquaporin proteins) in four different solutions: plain buffer, low concentration and high concentration of a mercury chloride (HgCl2) solution, and low concentration of a mercury solution followed by an agent (ME) known to reverse the effects of mercury. The water permeability of the cells was determined by the rate of their osmotic swelling. Interpret the results of this experiment, which are presented in the graph below.
Data from G. M. Preston et al., Appearance of water channels in Xenopus oocytes expressing red cell CHIP28 protein, Science 256: 3385–7 (1992).
Control oocytes not injected with aquaporin RNA were also incubated with buffer and the two concentrations of mercury. Predict what the results of these treatments would be.
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The attached articles propose some alternative measures of well-being. In your
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A patient visits her doctor with symptoms typical of a bladder infection. She is immediately prescribed an 800 mgdose of antibiotic (bioavailability = 1/2, t½ = 12 h). The corresponding plasma concentration of drug is found to be 96 micrograms/ml. What is the volume of distribution of this drug? Please round to the nearest liter.
Chapter 5 Solutions
CAMPBELL BIOLOGY:CONCEPTS+CONNECTIONS
Ch. 5 - Fill in the following concept map to review the...Ch. 5 - Label the parts of the following diagram...Ch. 5 - Which best describes the structure of a cell...Ch. 5 - Prob. 4TYKCh. 5 - The sodium concentration in a cell is 10 times...Ch. 5 - The synthesis of ATP from ADP and a. stores energy...Ch. 5 - Facilitated diffusion across a membrane requires...Ch. 5 - What are the main types of cellular work? How does...Ch. 5 - Why is the barrier of the activation energy...Ch. 5 - Relate the laws of thermodynamics to living...
Ch. 5 - How do the components and structure of cell...Ch. 5 - Sometimes inhibitors can be harmful to a cell;...Ch. 5 - Cells lining kidney tubules function in the...Ch. 5 - SCIENTIFIC THINKING Mercury is known to inhibit...Ch. 5 - A biologist performed two series of experiments on...Ch. 5 - Organophosphates (organic compounds containing...
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