NESTER'S MICROBIOLOGY: A HUMAN PERSPECT
9th Edition
ISBN: 9781260161373
Author: Anderson, SALM
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 13, Problem 10SA
Describe how prions propagate.
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Which of the following best describes why it is difficult to develop antiviral drugs? Explain why.
A. antiviral drugs are very difficult to develop andhave no side effects
B. viruses are difficult to target because they usethe host cell’s enzymes and ribosomes tometabolize and replicate
C. viruses are too small to be targeted by drugs
D. viral infections usually clear up on their ownwith no problems
This question has 3 parts (A, B, & C), and is under the subject of Nutrition. Thank you!
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Chapter 13 Solutions
NESTER'S MICROBIOLOGY: A HUMAN PERSPECT
Ch. 13 - Prob. 1SACh. 13 -
2. How is the replication cycle of lambda phage...Ch. 13 -
3. What is lysogenic conversion?
Ch. 13 -
4. How is specialized transduction different from...Ch. 13 -
5. What is the difference between acute and...Ch. 13 -
6. Why must (–) strand but not (+) strand RNA...Ch. 13 - Why are RNA viruses and retroviruses more...Ch. 13 - What is the role of a prophage in persistent...Ch. 13 -
9. How do oncogenes differ from proto-oncogenes?
Ch. 13 - Describe how prions propagate.
Ch. 13 - Prob. 1MCCh. 13 - Prob. 2MCCh. 13 -
3. Classification of viruses is based on all of...Ch. 13 - Prob. 4MCCh. 13 -
5. All phages must be able to
1) inject their...Ch. 13 - Prob. 6MCCh. 13 -
7. Influenza vaccines must be changed yearly...Ch. 13 - Prob. 8MCCh. 13 - Prob. 9MCCh. 13 - Prob. 10MCCh. 13 -
1. A public health physician isolated large...Ch. 13 - Prob. 2ACh. 13 - Viruses that infect bacterial cells do not infect...Ch. 13 - Prob. 2CT
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- This question has multiple parts (A, B & C), and under the subject of Nutrition. Thank you!arrow_forwardCalculate the CFU/ml of a urine sample if 138 E. coli colonies were counted on a Nutrient Agar Plate when0.5 mls were plated on the NA plate from a 10-9 dilution tube. You must highlight and express your answerin scientific notatioarrow_forwardDon't copy off the other answer if there is anyarrow_forward
- 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. 3arrow_forward24) 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.arrow_forward30) 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 Garrow_forward
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