Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Textbook Question
Chapter 6.3, Problem 2MI
MICRO INQUIRY Why do the empty capsids remain attached to the cell after the viral genome enters the host cell?
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(a) Why the plasmid (containing the foreign DNA), together with the competentbacterial cells are heated at 42°C? b) What would be the next stage after heat shock? Discuss the process involved.c) How would you analyze the efficiency of the competent cells used duringtransformation?
What is the function of the viral capsid?
Recall the enveloped viruses possessing a nonsegmented RNAgenome.
Chapter 6 Solutions
Prescott's Microbiology
Ch. 6.2 - MICRO INQUIRY Which capsids are icosahedral? Which...Ch. 6.2 - Prob. 2MICh. 6.2 - MICRO INQUIRY Why is T4 said to have binal...Ch. 6.2 - Retrieve, Infer, Apply 1. How are viruses similar...Ch. 6.2 - Retrieve, Infer, Apply 2. What is the difference...Ch. 6.2 - Retrieve, Infer, Apply 3. Compare the structure of...Ch. 6.2 - Prob. 4CCCh. 6.2 - Retrieve, Infer, Apply 5. All four nucleic acid...Ch. 6.3 - MICRO INQUIRY Which of these mechanisms involves...Ch. 6.3 - MICRO INQUIRY Why do the empty capsids remain...
Ch. 6.3 - Explain why the receptors that viruses have...Ch. 6.3 - What probably plays the most important role in...Ch. 6.3 - How do you think the complexity of the viral...Ch. 6.3 - In general, DNA viruses can be much more dependent...Ch. 6.3 - Consider the origin of viral envelopes and suggest...Ch. 6.3 - Why are the proteins involved in virion assembly...Ch. 6.4 - Why is a lysogen considered a new or different...Ch. 6.4 - Define the terms lysogeny, temperate phage,...Ch. 6.4 - What advantages might a phage gain by being...Ch. 6.4 - Describe lysogenic conversion and its...Ch. 6.4 - How does a latent infection differ from a chronic...Ch. 6.4 - What is a cytocidal infection? What is a...Ch. 6.4 - Define the following terms: tumor, neoplasia,...Ch. 6.4 - Distinguish the mechanism by which dsDNA viruses...Ch. 6.5 - Prob. 1MICh. 6.5 - Prob. 1CCCh. 6.5 - Given that viruses must be cultivated to make...Ch. 6.7 - What are viroids and why are they of great...Ch. 6.7 - How does a viroid differ from a virus? From a...Ch. 6.7 - What is a prion? In what way does a prion differ...Ch. 6.7 - Prob. 4CCCh. 6 - Prob. 1RCCh. 6 - Prob. 2RCCh. 6 - Many classification schemes are used to identify...Ch. 6 - The origin and evolution of viruses is...Ch. 6 - Consider the separate stages of an animal virus...
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- Virology question- What are the constraints put by the host cell? e.g. lack of RNA polymerase in host cell, non-dividing cells. How do viruses overcome the constraints?arrow_forwardQuestion: Gene therapy: a) what disease is it used for? b) what genetic defect causes the disease? c) what and how viral vector is used AND/OR CRISPR-Cas is used? d) what is in the horizen re. development of new virus-based gene delivery vesicle?arrow_forwardPart B - Viral Classification: The Baltimore Scheme The Baltimore classification scheme is based on the relationship between the virus' genome and its mRNA. For the following choices, indicate which viruses would fall into each classification: 1) require reverse transcriptase to copy the information in their own genome to DNA; 2) can replicate and be transcribed in the same manner as the cell's own genetic material; and 3) a replicative form of DNA must be produced and is used for both replication and transcription. Drag and drop choices to the bins they describe. double-stranded DNA viruses Requires reverse transcriptase double-stranded RNA viruses retroviruses double-stranded DNA viruses that have an RNA intermediate Functions similarly to cell's own genetic material plus-strand RNA viruses minus-strand RNA viruses Reset Help plus-strand DNA viruses Uses a replicative form of DNAarrow_forward
- What two different DNA viral infections can be identified with a Papsmear? Explain what abnormalities one would see.arrow_forwardOF rasc PDF Teas fill Which of the following is NOT a step in the replication of a retrovirus? A diagram illustrating the process is provided below. PDF UNOFFIC TRANSCR 59°F Mostly cloudy Virus Viral RNA Reverse transcriptase DDDDDD ↓Viral DNA Provirus mRNA mm Proteins mn Viral RNA Protease Plasma membrane Host DNA New virus O The single-stranded DNA forms a double-stranded DNA called a provirus, which is incorporated into the host cell DNA. O After a retrovirus attaches to the host cell, it injects its viral DNA and uses the host cell's machinery and materials to replicate. O After a retrovirus injects its viral RNA into a host cell, it forms a DNA strand by reverse transcription. O When the host cell replicates, a provirus produces the viral RNA needed to produce more virus particles. P O Search hun recc PDF maste omissarrow_forwarddraw structure of plasmidarrow_forward
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