GMS 6121 Exam 1 Module 1.1 well
answered already passed
All of them - correct answer ✔✔How many cell types and organ systems do viruses target?
Yes, they favor particular cell types and organs - correct answer ✔✔Do individual viruses exhibit
tropism?
Obligate intracellular - correct answer ✔✔What type of parasites are viruses?
1. enzymes that produce basic chemical building blocks
2. enzymes that generate usable energy
3. enzymes, tRNAs, and/or ribosomes that direct protein synthesis
4. membranes that concentrate and localize key molecules - correct answer ✔✔What do viruses
lack that they must gain from their host?
nucleic acid
capsid - protein coat encoded by the virus - correct answer ✔✔What do ALL viruses have?
envelope - lipid membrane provided by the host - correct answer ✔✔What do SOME viruses
have?
a complete, infectious virus particle - correct answer ✔✔What is a virion?
MUCH smaller
, first discovered because of their size, used a filter to screen out bacteria and found pathogenic
particles still present = virus - correct answer ✔✔How do viruses compare to bacteria?
DNA or RNA + Capsid protein = nucleocapsid
Nucleocapsid = naked capsid virus
Nucleocapsid + lipid membrane, glycoproteins = enveloped virus - correct answer ✔✔What is
the basic virus structure?
Naked Capsid = resistant to drying, heat, detergents, acid
Enveloped virus = sensitive to drying, heat, detergents, acid - correct answer ✔✔What are the
differences between naked capsid and enveloped viruses?
-retain infectivity on drying
-survive well on environmental surfaces
-spread easily via fomites
-can survive acidic environment of GI tract
-MUST kill host cells to release mature virus particles
-Antibody response may be sufficient to neutralize infection - correct answer ✔✔What are the
pros and cons of naked capsid virus?
-does not need to kill cells in order to spread
- may require both humoral and cellular immune responses
answered already passed
All of them - correct answer ✔✔How many cell types and organ systems do viruses target?
Yes, they favor particular cell types and organs - correct answer ✔✔Do individual viruses exhibit
tropism?
Obligate intracellular - correct answer ✔✔What type of parasites are viruses?
1. enzymes that produce basic chemical building blocks
2. enzymes that generate usable energy
3. enzymes, tRNAs, and/or ribosomes that direct protein synthesis
4. membranes that concentrate and localize key molecules - correct answer ✔✔What do viruses
lack that they must gain from their host?
nucleic acid
capsid - protein coat encoded by the virus - correct answer ✔✔What do ALL viruses have?
envelope - lipid membrane provided by the host - correct answer ✔✔What do SOME viruses
have?
a complete, infectious virus particle - correct answer ✔✔What is a virion?
MUCH smaller
, first discovered because of their size, used a filter to screen out bacteria and found pathogenic
particles still present = virus - correct answer ✔✔How do viruses compare to bacteria?
DNA or RNA + Capsid protein = nucleocapsid
Nucleocapsid = naked capsid virus
Nucleocapsid + lipid membrane, glycoproteins = enveloped virus - correct answer ✔✔What is
the basic virus structure?
Naked Capsid = resistant to drying, heat, detergents, acid
Enveloped virus = sensitive to drying, heat, detergents, acid - correct answer ✔✔What are the
differences between naked capsid and enveloped viruses?
-retain infectivity on drying
-survive well on environmental surfaces
-spread easily via fomites
-can survive acidic environment of GI tract
-MUST kill host cells to release mature virus particles
-Antibody response may be sufficient to neutralize infection - correct answer ✔✔What are the
pros and cons of naked capsid virus?
-does not need to kill cells in order to spread
- may require both humoral and cellular immune responses
