Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Textbook Question
Chapter 12.3, Problem 1MI
MICRO INQUIRY How might acetyl-CoA be used by the cell?
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Use the following information to answer the question(s) below.
Martin Wikelski and L. Michael Romero (Body size, performance and fitness in Galápagos marine iguanas, Integrative and
Comparative Biology 43 [2003]:376-86) measured the snout-to-vent (anus) length of Galápagos marine iguanas and observed
the percent survival of different-sized animals, all of the same age. The graph shows the log snout-vent length (SVL, a
measure of overall body size) plotted against the percent survival of these different size classes for males and females.
Survival (%)
100-
80-
60-
40-
20-
0+
1.9
T
2 2.1
2.2 2.3 2.4 2.5 2.6 2.7
Log SVL (mm)
19) Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas?
A) directional selection
B) stabilizing selection
C) disruptive selection
D) You cannot determine the type of selection from the above information.
3
24) Use the following information to answer the question below.
Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not.
They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes
the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin.
Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are
determined (see table) and used to determine the actual allele frequencies in the population.
TT
0.49
Tt
0.42
tt
0.09
Refer to the table above. Is this population in Hardy-Weinberg equilibrium?
A) Yes.
C) No; there are more homozygotes than expected.
B) No; there are more heterozygotes than expected.
D) It is impossible to tell.
30)
A
B
CDEFG
Refer to the accompanying figure. Which of the following forms a monophyletic group?
A) A, B, C, and D
B) C and D
C) D, E, and F
D) E, F, and G
Chapter 12 Solutions
Prescott's Microbiology
Ch. 12.1 - Prob. 1CCCh. 12.1 - Prob. 2CCCh. 12.1 - Prob. 3CCCh. 12.1 - Retrieve, Infer, Apply What is self-assembly? What...Ch. 12.3 - MICRO INQUIRY How might acetyl-CoA be used by the...Ch. 12.3 - Retrieve, Infer, Apply Briefly describe the three...Ch. 12.3 - Retrieve, Infer, Apply Which two enzymes are...Ch. 12.4 - Prob. 1MICh. 12.4 - MICROINQUIRY What is the difference between Lipid...Ch. 12.4 - Retrieve, Infer, Apply What is gluconeogenesis?...
Ch. 12.4 - Retrieve, Infer, Apply Describe the formation of...Ch. 12.4 - Retrieve, Infer, Apply Suppose a microorganism is...Ch. 12.4 - Retrieve, Infer, Apply Diagram the steps involved...Ch. 12.4 - Retrieve, Infer, Apply What would happen to a cell...Ch. 12.5 - Prob. 1MICh. 12.5 - Prob. 2MICh. 12.5 - Prob. 1CCCh. 12.5 - Prob. 2CCCh. 12.5 - Prob. 3CCCh. 12.5 - How do organisms assimilate sulfur? How does...Ch. 12.5 - Prob. 5CCCh. 12.5 - Prob. 6CCCh. 12.5 - Describe the glyoxylate cycle. How is it similar...Ch. 12.5 - Prob. 8CCCh. 12.6 - How is phosphorus assimilated? What roles do...Ch. 12.6 - Explain the difference between a purine and a...Ch. 12.6 - Outline the way in which purines and pyrimidines...Ch. 12.7 - Prob. 1CCCh. 12.7 - How are unsaturated fatty acids made?Ch. 12.7 - Briefly describe the pathways for triacylglycerol...Ch. 12.7 - Prob. 4CCCh. 12.7 - Activated carriers participate in carbohydrate,...Ch. 12 - Prob. 1RCCh. 12 - Prob. 2RCCh. 12 - Prob. 3RCCh. 12 - Prob. 4RCCh. 12 - Prob. 5RCCh. 12 - Prob. 6RCCh. 12 - Prob. 7RCCh. 12 - What would happen if a microorganism that depended...Ch. 12 - Intermediary carriers are in a limited supply:...Ch. 12 - Prob. 3AL
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