PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Textbook Question
Chapter 26.6, Problem 1CC
How does that use of a segmented genome by influenza viruses differ from that used by bacteriophage ϕ6?
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Chapter 26 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 26.1 - List some characteristics used in classifying...Ch. 26.1 - Prob. 2CCCh. 26.2 - Prob. 1MICh. 26.2 - Why do you think T4 evolved to initiate DNA...Ch. 26.2 - What function does HMC glycosylation serve?Ch. 26.2 - Explain why the T4 genome is circularly permuted.Ch. 26.2 - Prob. 1.2CCCh. 26.2 - How is a prophage induced to become active again?Ch. 26.2 - Describe the roles of cII, CIII, repressor (CI),...Ch. 26.2 - How do the temperate phages Mu and P1 differ from...
Ch. 26.2 - How is the envelope of this virus formed? How does...Ch. 26.2 - Why do cold sores recur throughout the lifetime of...Ch. 26.2 - In what part of the host cell does a herpesvirus...Ch. 26.2 - Many small DNA viruses rely on host enzymes for...Ch. 26.3 - Why is the X174 genome considered plus stranded?Ch. 26.3 - Why is it necessary for some ssDNA viruses to...Ch. 26.3 - Prob. 2CCCh. 26.3 - How do parvoviruses trick the host DNA polymerase...Ch. 26.4 - The rotavirus genome encodes 12 proteins. Suggest...Ch. 26.4 - Describe the life cycle of 6 phage. What makes...Ch. 26.4 - Prob. 3CCCh. 26.4 - In what ways are the life cycles of 6 and...Ch. 26.5 - Where in the host does the plus-strand RNA genome...Ch. 26.5 - How do some plus-strand viruses use polyproteins...Ch. 26.5 - What is an IRES? Why is it important?Ch. 26.5 - Prob. 3CCCh. 26.6 - How does that use of a segmented genome by...Ch. 26.6 - Prob. 2CCCh. 26.7 - Prob. 1MICh. 26.7 - Prob. 1CCCh. 26.7 - Prob. 2CCCh. 26.7 - Prob. 3CCCh. 26.8 - Prob. 1CCCh. 26.8 - Trace the HBV multiplication cycle, paying...Ch. 26 - Prob. 1RCCh. 26 - Prob. 2RCCh. 26 - Prob. 3RCCh. 26 - Prob. 4RCCh. 26 - No temperate RNA phages have yet been discovered....Ch. 26 - The choice between lysogeny and lysis is...Ch. 26 - Prob. 3ALCh. 26 - You are studying RNA viruses and have discovered a...Ch. 26 - Prob. 5ALCh. 26 - Prob. 6AL
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- Explain, with the aid of a hand drawn diagram, the life cycle of bacteriophage T4.arrow_forwardwhen various strains of lambda phage are seeded on a lawn of e.coli, they can form clear or turbid plaques. Explain the difference between the two types of plaques. can all bacteriophage form clear and turbid plaques?arrow_forwardWhat is the significance of the length of a typical viral genome?arrow_forward
- 26. In some cases involying bacteriophages, the viral DNA will insert itself into the bacterial DNA. Which of the following statements does not correctly describe this type of insertion? A) The inserted viral DNA is referred to as a prophage. B) The inserted viral DNA can leave the bacterial DNA. C) The inserted viral DNA is a part of the lysogenic cycle of replication. D) The inserted viral DNA can never leave the bacterial DNA and enter the lytic cycle.arrow_forward32. The CRISPR-Cas system helps some prokaryotes defend against the phage! Which of the following statements correctly describes how this system works? A) it produces RNA that is translated into proteins that attack viral DNA. B) it inserts specific genes randomly into the prokaryotic genome ) it causes the synthesis of proteins that are then secreted by the prokaryote that attack viruses in the environment. D) it cuts viral DNA at specific sequences before it can replicate.arrow_forwardThis virus does not conform to the central dogma of molecular biology. Explain the central dogma and how the virus behaves differently. How should the patient to treated? Can the treatments cure the disease?arrow_forward
- Discuss retroregulation and its significance in the biology of bacteriophage lambda during: a) Phage infection b) Prophage inductionarrow_forwardWhy is the adenovirus terminal protein essential for replicatingits genome?arrow_forwardA particular animal virus requires the use of DNA polymerase from its host, since it does not possess its own DNA polymerase enzyme. Which of the following assumptions in A-D would likely be correct regarding this virus? A) O This virus could not be a retrovirus type. B) OIt could be a (-) ss RNA virus. C) O It could be a (+) ss RNA virus. D) O The vVirus life cycle very likely includes going to the host cell nucleus. E) O All ofA-D are correct assumptions.arrow_forward
- Double-stranded RNA viruses, use the following polymerase for genome synthesis: A) viral RNA-dependent RNA polymerase. B) host cell DNA-dependent RNA polymerase. C) viral DNA-dependent DNA polymerase. D) host cell RNA-dependent RNA polymerase.arrow_forwardOne mL of a bacteriophage suspension is mixed with 20 mL of a bacterialculture and 50% of the phages adsorb. We know that the bacteriophagesuspension had a concentration of 1x10^10 viruses per mL, and the bacterialculture had a concentration of 3x10^8 bacteria per mL. What fraction of the cells is uninfected?arrow_forwardOne mL of a bacteriophage suspension is mixed with 20 mL of a bacterialculture and 50% of the phages adsorb. We know that the bacteriophagesuspension had a concentration of 1x10^10 viruses per mL, and the bacterialculture had a concentration of 3x10^8 bacteria per mL. What fraction of the cells is single infected?arrow_forward
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