Nester's Microbiology: A Human Perspective
9th Edition
ISBN: 9781259709999
Author: Denise G. Anderson Lecturer, Sarah Salm, Deborah Allen
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Question
Chapter 13, Problem 6MC
Summary Introduction
Introduction:
Phages are the small entities, which cannot be classified in living and nonlivingcategories. Viruses infecting bacteria are called bacteriophages. Phages usually infect their host cell by two mechanisms, namely the lytic cycle and lysogenic cycle. Phages were classified on the basis of morphology and genetic material. Filamentous phages are the type of bacteriophages or viruses of bacteria, which have filamentous or rod-likeshape. Filamentousphages are the single-stranded DNA (deoxyribonucleic acid) containing phages, which usually infects Gram-negative bacteria.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following is characteristic of the lytic cycle?
a) The virus-host relationship usually lasts for generations
b) The viral genome replicates by destroying the host cell
c) A single phage being released at a time
d) Viral DNA is incorporated into the host genome
Which of the following are activities that a virus particle (a virion) cannot accomplish by itself?
Select all that apply.
a) Extract energy from food molecules
b) Synthesis of capsid proteins
c) Generate ATP
d) Binding to a host cell
e) Replication of the viral genome
Pathogenic infections induce damage to the host by a variety of mechanisms. While many mechanisms are direct effects of the pathogen, some damaging mechanisms result from the immune response to the infection. Examples of damage caused by the host immune response are:
a) Exotoxin production, endotoxin
b) Cell-mediated inmunity, direct cytopathic effect
c) Endotoxin, inmmunune complexes
d) Direct cythopathic effect, endotoxin
e) Cell-mediated inmunity, inmmunune complexes
Chapter 13 Solutions
Nester's Microbiology: A Human Perspective
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
Knowledge Booster
Similar questions
- a "persistent infection" is best described as: A) chronic infection in which viral genes are not expressed and viral proteins are NOT made B) an infection in which the viral nucleic acid does NOT persist/stay in the host cell C) A general term that describes all chronic/long-term infections D) chronic infection in which viral proteins are constantly made E) chronic infections that usually do NOT have a fatal outcomearrow_forward34) Which of the following fungal diseases involves an intracellular parasite that partially disables macrophages, allowing for spread beyond the lungs. A) Coccidioidomycosis C) Pneumocystis B) Blastomycosis D) Histoplasmosis 35) Of the following genetic material types seen in viruses, which genetic material type leads to rapid, almost immediate production of viral proteins, followed closely by replication of the genome leading to rapid synthesis of new viruses, which tends to overwhelm the host, as exemplified in a viral disease which causes more than 200,000 deaths of children worldwide each year. A) negative (-) strand single-stranded RNA B) double-stranded RNA D) positive (+) strand single-stranded RNA C) single-stranded DNAarrow_forwardWhich statement about Yersinia pestis is false?a) Conditions inside human phagocytes activate virulence genes.b) The bacterium can form biofilms in the flea digestive system.c) Yops protein increases phagocytosis.d) The organism resembles a safety pin in certain stained preparations.e) It was responsible for the “black death” in Europe during the 1300s.arrow_forward
- Imagine that a drug was discovered that is able to bind to and cut off the 5' cap of the coronavirus RNA genome once it enters the host cytoplasm. Based on this description, which of the following steps of the infection cycle would this drug directly inhibit? a) Entry b) Synthesis c) Attachment d) Release e) Assemblyarrow_forwardWhich of the following statements regarding retroviruses is FALSE? A) a cellular enzyme converts the RNA genome into DNA B) double-stranded DNA is transcribed into mRNA by cellular enzymes C) retroviral genomes consist of positive-sense RNA D) the virus commonly integrates into the host chromosome as a provirus E) viral RNA enters the nucleus F) ALL of these statements are TRUEarrow_forward27) Which of the following is an enzyme which results in Staphylococcus aureus being able to spread more easily by breaking down the extracellular matrix of connective tissues. A) pyrogens B) lipase C) hyaluronidase D) neuraminidase E) M protein 28) Which of the following is a +SSRNA virus that can cause birth defects? A) chickenpox B) smallpox C) rubella D) roseola E) measles 29) The Gram-negative diplococcus. A) Haemophilus influenza B) Listeria monocytogenes C) Clostridium botulinum is resistant to phagocytosis and releases Lipid A to cause inflamnation. D) Streptococcus agalactiae E) Neisseria meningitidis 30) Listeria monocytogenes pathogenesis is directly related to its ability to A) produce a powerful toxin. C) produce a polysaccharide capsule. B) live and reproduce inside its host's cells. D) resist most antimicrobial agents. 4. 31) Disseminated intravascular coagulation (DIC) is a complication resulting from the A) release of cytotoxins. B) attachment of bacterial cells to the…arrow_forward
- Normal microbiota provide protection from infection in each of the following ways EXCEPT: Question 3 options: A) they produce antibacterial chemicals. B) they compete with pathogens for nutrients. C) they make the chemical environment unsuitable for nonresident bacteria. D) they produce lysozyme.arrow_forwardThe following statements about Streptobacillus moniliformis are all true excepta) it can be transmitted by food contaminated with rodent feces.b) pet store workers are at increased risk of infection.c) it can be transmitted by the bites of animals other than rats.d) human infection is characterized by irregular fevers, rash, and joint pain.e) it is a Gram-positive spore-forming rod.arrow_forwardWhich form of Plasmodium passes from mosquitoes to people and causes infection?a) Trophozoitesb) Merozoitesc) Sporozoitesd) Vegetative forme) Oocystarrow_forward
- Mycobacterium tuberculosis is very difficult to stain because of the A) presence of ribosomes in the cytoplasm. B) location of the DNA within the cell. C) large amounts of a waxlike lipids present in its cell wall. D) lack of a cell wall.arrow_forward48) Sleeping sickness is caused by: a) Unicellular organism b) Eukaryote c) Protozoan d) Parasite e) Zoonotic agent 49) There are no antibiotics for fungus because: a) They are Eukaryote b) Have the same ribosomal mechanism as us c) Most natural antibiotics are made by fungus d) all the above e) a & b only 50) The most common animal virus shape consists of: a) 20 equilateral triangles b) 12 vertices c) icosahedron head and helical tail d) a & b e) none of the abovearrow_forwardwe can stop the biosynthesis stage of the viral life cycle (not the stages before it) by preventing/inhibiting: A) fusion of the envelope and the plasma membrane B) replication and expression of viral nucleic acid/genome C) the virus's attachment molecules from binding to the host cell receptor D) new copies of viral nucleic acid from combining with newly made viral proteins E)buddingarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education