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 27.1, Problem 2RIA
Consider these terms: Equine torovirus, Nidovirales, Torovirinae, Equine torovirus (EToV), Toroviridae, and Torovirus. Construct a figure similar to figure 27.1 using these terms.
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Please help with question. thank you
You are studying the expression of the lac operon. You have isolated mutants as described below. In the presence of glucose, explain/describe what would happen, for each mutant, to the expression of the lac operon when you add lactose AND what would happen when the bacteria has used up all of the lactose (if the mutant is able to use lactose).5. Mutations in the lac operator that strengthen the binding of the lac repressor 200 fold
6. Mutations in the promoter that prevent binding of RNA polymerase
7. Mutations in CRP/CAP protein that prevent binding of cAMP8. Mutations in sigma factor that prevent binding of sigma to core RNA polymerase
Chapter 27 Solutions
Prescott's Microbiology
Ch. 27.1 - List some characteristics used in classifying...Ch. 27.1 - Consider these terms: Equine torovirus,...Ch. 27.2 - What enzyme found in the T4 baseplate facilitates...Ch. 27.2 - Why do you think T4 evolved to initiate DNA...Ch. 27.2 - What function does HMC glycosylation serve?Ch. 27.2 - How is the envelope of this virus formed? How does...Ch. 27.2 - Explain why the T4 genome is circularly permuted.Ch. 27.2 - Prob. 1.2RIACh. 27.2 - How is a prophage induced to become active again?Ch. 27.2 - Describe the roles of cII, CIII, repressor (CI),...
Ch. 27.2 - How do the temperate phages Mu and P1 differ from...Ch. 27.2 - The CRISPR/Cas system has been a boon to...Ch. 27.2 - Why do cold sores recur throughout the lifetime of...Ch. 27.2 - In what part of the host cell does a herpesvirus...Ch. 27.2 - Many small DNA viruses rely on host enzymes for...Ch. 27.3 - Why is the X174 genome considered plus stranded?Ch. 27.3 - Prob. 2MICh. 27.3 - Why is it necessary for some ssDNA viruses to...Ch. 27.3 - From the point of view of the virus, compare the...Ch. 27.3 - How do parvoviruses trick the host DNA polymerase...Ch. 27.4 - The rotavirus genome encodes 12 proteins. Suggest...Ch. 27.4 - Describe the life cycle of 6 phage. What makes...Ch. 27.4 - Prob. 3RIACh. 27.4 - In what ways are the life cycles of 6 and...Ch. 27.5 - Where in the host does the plus-strand RNA genome...Ch. 27.5 - How do some plus-strand viruses use polyproteins...Ch. 27.5 - What is an IRES? Why is it important?Ch. 27.5 - Prob. 3RIACh. 27.6 - How does that use of a segmented genome by...Ch. 27.6 - Prob. 2RIACh. 27.7 - Prob. 1MICh. 27.7 - Prob. 1RIACh. 27.7 - Prob. 2RIACh. 27.7 - What role does alternative splicing play in the...Ch. 27.8 - Prob. 1RIACh. 27.8 - Trace the HBV multiplication cycle, paying...Ch. 27 - No temperate RNA phages have yet been discovered....Ch. 27 - The choice between lysogeny and lysis is...Ch. 27 - Prob. 3CHICh. 27 - You are studying RNA viruses and have discovered a...Ch. 27 - Prob. 5CHICh. 27 - Upon infection of host epithelial cells,...Ch. 27 - Associated with the envelope of herpesviruses are...
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