Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Chapter 3.7, Problem 1RIA
Retrieve, Infer, Apply
What are the functions of fimbriae (pili) and sex pili?
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Question #3:
In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would
transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming
there was just one gene conferring gametophytic obligate apomixis, and that the two parents are
inbreds, what would be the consequences of such a cross if:
a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the parental cross.
b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the…
Question #5:
Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The
genes show independent assortment. Recessive alleles at both loci are required for the facultative
apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C.
At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype.
A facultative apomict male, capable of producing viable pollen, was crossed with a sexually
reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic
ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following
temperatures*:
a) 15°C?
b) 25°C?
*for full credit, show crosses and genotypes where appropriate. Remember to position the
female first (left side) in the cross.
Type your answer here:
a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent.
b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved
Chapter 3 Solutions
Prescott's Microbiology
Ch. 3.2 - Retrieve, Infer, Apply Why is the term prokaryote...Ch. 3.2 - Retrieve, Infer, Apply What characteristic shapes...Ch. 3.2 - Retrieve, Infer, Apply What advantages might a...Ch. 3.2 - Prob. 4RIACh. 3.3 - Retrieve, Infer, Apply List the functions of...Ch. 3.3 - Retrieve, Infer, Apply Describe in words and with...Ch. 3.3 - Retrieve, Infer, Apply 3. On what basis are...Ch. 3.3 - Retrieve, Infer, Apply Describe facilitated...Ch. 3.3 - Retrieve, Infer, Apply 5. What are uniport,...Ch. 3.3 - Retrieve, Infer, Apply 6. What are siderophores?...
Ch. 3.4 - MICRO INQUIRY How does the outer membrane of the...Ch. 3.4 - MICRO INQUIRY Are these transporter proteins...Ch. 3.4 - Retrieve, Infer, Apply Describe in detail the...Ch. 3.4 - Retrieve, Infer, Apply List the major molecules...Ch. 3.4 - Retrieve, Infer, Apply When protoplasts and...Ch. 3.4 - Retrieve, Infer, Apply 4. The cell walls of most...Ch. 3.4 - Retrieve, Infer, Apply What two mechanisms allow...Ch. 3.5 - Retrieve, Infer, Apply What is the difference...Ch. 3.5 - Retrieve, Infer, Apply S-layers and some capsules...Ch. 3.6 - Retrieve, Infer, Apply Briefly describe the nature...Ch. 3.6 - Retrieve, Infer, Apply List the most common kinds...Ch. 3.6 - Retrieve, Infer, Apply do plasmids differ from...Ch. 3.6 - Retrieve, Infer, Apply Explain the importance of...Ch. 3.7 - MICRO INQUIRY How does flagellum growth compare to...Ch. 3.7 - Retrieve, Infer, Apply What are the functions of...Ch. 3.7 - Retrieve, Infer, Apply What terms are used to...Ch. 3.7 - Retrieve, Infer, Apply What is self-assembly? Why...Ch. 3.8 - Would this flagellum be found in a typical...Ch. 3.8 - Retrieve, Infer, Apply Describe the way many...Ch. 3.8 - Prob. 2RIACh. 3.8 - Prob. 3RIACh. 3.8 - Retrieve, Infer, Apply Suggest why chemotaxis is...Ch. 3.9 - Retrieve, Infer, Apply Describe the structure of...Ch. 3.9 - Retrieve, Infer, Apply Briefly describe endospore...Ch. 3.9 - Retrieve, Infer, Apply What features of the...Ch. 3 - Propose a model for the assembly of a flagellum in...Ch. 3 - The peptidoglycan of bacteria has been compared...Ch. 3 - Why might a microbe have more than one uptake...Ch. 3 - Design an experiment that illustrates the cell...Ch. 3 - What would you expect to observe if you were able...Ch. 3 - Develop a hypothesis to explain why gas vacuoles...Ch. 3 - In 2009 it was reported that a member of the genus...Ch. 3 - LPS is synthesized in the cytoplasm and then...
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