Foundations in Microbiology
10th Edition
ISBN: 9781259705212
Author: Kathleen Park Talaro, Barry Chess Instructor
Publisher: McGraw-Hill Education
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Question
Chapter 12.L1, Problem 5WC
Summary Introduction
To determine:
- The basis for combined therapy.
- Some reasons it could be helpful to use combined therapy in treating HIV infection.
Introduction:
Combined therapy refers to the use of multiple antimicrobials to treat an infection.
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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:
Chapter 12 Solutions
Foundations in Microbiology
Ch. 12.1 - State the goals of antimicrobial therapy.Ch. 12.1 - Discuss the origins of antimicrobial drugs.Ch. 12.1 - Differentiate between antibiotics, synthetic...Ch. 12.1 - Describe some of the special strategies of...Ch. 12.1 - Explain what is meant by a drug's spectrum and how...Ch. 12.1 - Summarize the five modes of action of...Ch. 12.1 - Differentiate between antibiotics and synthetic...Ch. 12.1 - Differentiate between narrow-spectrum and...Ch. 12.1 - Can you determine why some drugs have narrower...Ch. 12.1 - What is the major source of antibiotics and what...
Ch. 12.1 - Prob. 5CYPCh. 12.1 - Prob. 6CYPCh. 12.1 - Explain the major modes of action of antimicrobial...Ch. 12.1 - Explain the concept of competitive inhibition, and...Ch. 12.1 - What would be the extended effects of drugs that...Ch. 12.2 - Describe the classes of antibacterial drugs that...Ch. 12.2 - Prob. 8ELOCh. 12.2 - Indicate which types of antibacterial drugs block...Ch. 12.2 - Describe some new classes of antibacterial drugs...Ch. 12.2 - Construet a chart that summarizes the modes of...Ch. 12.2 - Why do the penicillin and cephalosporin groups of...Ch. 12.3 - Categorize antimicrobial drugs that are effective...Ch. 12.3 - Prob. 12ELOCh. 12.3 - Prob. 13ELOCh. 12.3 - Prob. 14ELOCh. 12.3 - Prob. 12CYPCh. 12.3 - Explain why there are fewer antifungal,...Ch. 12.3 - Prob. 14CYPCh. 12.3 - Summarize the origins and biological actions of...Ch. 12.4 - Describe the development of microbial drug...Ch. 12.4 - Explain the major mechanisms by which microbes...Ch. 12.4 - Review some of the ways to reduce levels of drug...Ch. 12.4 - Discuss how drug resistance spreads through a...Ch. 12.4 - Prob. 16CYPCh. 12.4 - Prob. 17CYPCh. 12.4 - Outline several situations or events that increase...Ch. 12.4 - Prob. 19CYPCh. 12.5 - Summarize the adverse effects of drugs on the...Ch. 12.5 - Describe some of the toxic effects of drugs on...Ch. 12.5 - Prob. 21ELOCh. 12.5 - Explain the ways in which drugs alter the normal...Ch. 12.5 - Prob. 20CYPCh. 12.5 - Prob. 21CYPCh. 12.5 - Prob. 22CYPCh. 12.5 - Prob. 23CYPCh. 12.6 - Prob. 23ELOCh. 12.6 - Describe the principles behind sensitivity testing...Ch. 12.6 - Explain the uses of the minimum inhibitory...Ch. 12.6 - Prob. 26ELOCh. 12.6 - Prob. 27ELOCh. 12.6 - Prob. 24CYPCh. 12.6 - Briefly describe the Kirby-Bauer test and its...Ch. 12.6 - Prob. 26CYPCh. 12.6 - Prob. 27CYPCh. 12.6 - Discuss the general factors to consider in...Ch. 12.L1 - A compound synthesized by bacteria or fungi that...Ch. 12.L1 - Which statement is not an aim in the use of drugs...Ch. 12.L1 - Microbial resistance to drugs is acquired through...Ch. 12.L1 - R factors are ________ that contain a code for...Ch. 12.L1 - When a patient's immune system becomes reactive to...Ch. 12.L1 - An antibiotic that disrupts the normal flora can...Ch. 12.L1 - Prob. 7MCQCh. 12.L1 - Prob. 8MCQCh. 12.L1 - Prob. 9MCQCh. 12.L1 - Which of the following modes of action would be...Ch. 12.L1 - The MIC is the of a drug thal is required to...Ch. 12.L1 - An antimicrobial drug with a ________ therapeutic...Ch. 12.L1 - Matching. Select the mode of action for each drug...Ch. 12.L1 - What was the purpose of giving postexposure...Ch. 12.L1 - What is a probable reason that tuberculosis...Ch. 12.L1 - Summarize the major problems with drug therapy as...Ch. 12.L1 - Using the diagram as a guide, briefly explain how...Ch. 12.L1 - Observe table 12.4 with regard to type of microbe...Ch. 12.L1 - Drugs are often given to patients before going...Ch. 12.L1 - Write an essay covering some of the main concerns...Ch. 12.L1 - Prob. 5WCCh. 12.L1 - Explain the kinds of tests that would...Ch. 12.L1 - Summarize the primary reasons that we find...Ch. 12.L2 - In 2015 the WHO surveyed 10,000 people on the...Ch. 12.L2 - Explain a simple test one could do to determine if...Ch. 12.L2 - Prob. 3CTCh. 12.L2 - You have been directed to take a sample from a...Ch. 12.L2 - From the results shown in figure 12.21, determine...Ch. 12.L2 - Explain why drugs that interfere with the...Ch. 12.L2 - In cases in which it is not possible to culture or...Ch. 12.L2 - Reviewing drug characteristics, choose an...Ch. 12.L2 - a. Using table 12.10 as a reference, find and...Ch. 12.L2 - For the following figures a-e, research the...
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