Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 5, Problem 10TYPSS
If you hold a salty cracker in your mouth long enough, it will begin to taste sweet. What is responsible for this change in taste?
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. Consider a base substitution mutation that occurred in a DNA sequence that resulted in a change in the
encoded protein from the amino acid glutamic acid to aspartic acid. Normally the glutamic acid amino acid
is located on the outside of the soluble protein but not near an active site.
O-H¨
A. What type of mutation occurred?
O-H
B. What 2 types of chemical bonds are found in the R-groups
of each amino acid? The R groups are shaded.
CH2
CH2
CH2
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H2N-C-COOH
1
H
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H
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protein. Explain what effect this mutation will have on this protein's function and why.
engineered constructs that consist of hollow fibers are acting as synthetic capillaries, around which cells have been loaded. The cellular space around a single fiber can be modeled as if it were a Krogh tissue cylinder. Each fiber has an outside “capillary” radius of 100 µm and the “tissue” radius can be taken as 200 µm. The following values apply to the device:R0 = 20 µM/secaO2 = 1.35 µM/mmHgDO2,T = 1.67 x 10-5 cm2/secPO2,m = 4 x 10-3 cm/secInstead of blood inside the fibers, the oxygen transport and tissue consumption are being investigated by usingan aqueous solution saturated with pure oxygen. As a result, there is no mass transfer resistance in the synthetic“capillary”, only that due to the membrane itself. Rather than accounting for pO2 variations along the length ofthe fiber, use an average value in the “capillary” of 130 mmHg.Is the tissue fully oxygenated?
Chapter 5 Solutions
Biological Science (7th Edition)
Ch. 5 - 1. What are three ways monosaccharides differ from...Ch. 5 - Prob. 2TYKCh. 5 - Prob. 3TYKCh. 5 - 4. What are the primary functions of carbohydrates...Ch. 5 - 8. Lysozyme, an enzyme found in human saliva,...Ch. 5 - SOCIETY Galactosemia is a potentially fatal...Ch. 5 - 10. If you hold a salty cracker in your mouth long...Ch. 5 - Sucrose is cleaved in your saliva by the enzyme...Ch. 5 - Prob. 13PIATCh. 5 - High-fructose corn syrup is produced by converting...
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