Viruses and Prions (Chapter 6) || 100% Accurate Answers.
Chronic infection correct answers Disease occurs slowly and stays with you for a long time, it
may reoccur
Acute infection correct answers Symptoms appear quick and only last for a short time
prions correct answers are disease-causing variants of normal proteins produced in nerve cells
(and a few others
PrPc correct answers Prion Protein cellular normal "healthy" prions
PrPsc correct answers is resistant to degradation by the enzymes contained in the lysosomes
that are seen floating nearby Kuru
Kuru brains correct answers have large holes and flower-shaped plaques. Holes are where
neurons used to be
PrPsc correct answers like a bad enzyme attacks and changes PrPc sc stands for scrapie
-Causes normal proteins change shape
prions correct answers cause fatal neurological diseases
-Produces vacuoles in the brain
spongiform encephalopathies correct answers Symptoms:
Loss of motor control
Dementia
Paralysis
Wasting
Eventually death (pneumonia)
spongiform encephalopathies correct answers Types:
Mad Cow Disease (BSE)
Scrapie
CWD (chronic wasting disease)
Kuru
Creutzfeldt-Jakob Disease (CJD) rare human disease
Mad Cow Disease (BSE, Bovine Spongiform Encephalophathy) correct answers 1987 Great
Britain
Scrapie correct answers Sheep scrape against fences and trees until raw
CWD (chronic wasting disease) correct answers muledeer, elk
Kuru correct answers Human tribes in New Guinea
Cannibal ritual
Creutzfeldt-Jakob Disease (CJD) correct answers rare human disease
-200 cases per year in the US
, -Probable genetic link or contact with tissues of infected people (tissue grafts)
viruses in latin correct answers poison
general viral characteristics correct answers -10 - 100 X's smaller than most bacteria.
-Obligate intracellular parasites
-Do carry own genetic information
virion correct answers mature, infectious, complete viral particles (NA + protein coat)
capsid correct answers protein coat; Made up of individual subunits called "capsomeres"
-Functions to protect genetic info.
-Functions in attachment to host cells
capsomeres correct answers are made up of one or few kinds of protein molecules
envelope correct answers Lipid envelope found on some viruses
Acquired from passing through host cell membrane
Enveloped viruses lose correct answers infectivity if envelope is destroyed
Paplomeres or spikes correct answers Found on some viruses
Often used for attachment
Helical, Icosahedral or cubic, and Complex or combined correct answers Three Basic Shapes
(virus)
helical shaped (virus) correct answers -Cylinder w/ identical capsomeres in a spiral
arrangement
-nucleic acid coiled inside
Icosahedral or cubic (virus) correct answers -20-sided figure, each side equilateral
-Often appear to be spherical
pleomorphic correct answers the ability to alter their shape or size in response to
environmental conditions.
pleomorphic correct answers virus structure can be
(Double-stranded DNA) ds-DNA (Single-stranded DNA) ss-DNA (Double-stranded RNA)
ds-RNA (Single-stranded RNA) ss-RNA correct answers virus 4 types of Nucleic acid
virus classifation correct answers -Based on the structure of capsid
-Based on host range
-Based site of replication
-Based type of transmission
lytic cycle correct answers 1. attachment
2. penetration
3. biosynthesis
Chronic infection correct answers Disease occurs slowly and stays with you for a long time, it
may reoccur
Acute infection correct answers Symptoms appear quick and only last for a short time
prions correct answers are disease-causing variants of normal proteins produced in nerve cells
(and a few others
PrPc correct answers Prion Protein cellular normal "healthy" prions
PrPsc correct answers is resistant to degradation by the enzymes contained in the lysosomes
that are seen floating nearby Kuru
Kuru brains correct answers have large holes and flower-shaped plaques. Holes are where
neurons used to be
PrPsc correct answers like a bad enzyme attacks and changes PrPc sc stands for scrapie
-Causes normal proteins change shape
prions correct answers cause fatal neurological diseases
-Produces vacuoles in the brain
spongiform encephalopathies correct answers Symptoms:
Loss of motor control
Dementia
Paralysis
Wasting
Eventually death (pneumonia)
spongiform encephalopathies correct answers Types:
Mad Cow Disease (BSE)
Scrapie
CWD (chronic wasting disease)
Kuru
Creutzfeldt-Jakob Disease (CJD) rare human disease
Mad Cow Disease (BSE, Bovine Spongiform Encephalophathy) correct answers 1987 Great
Britain
Scrapie correct answers Sheep scrape against fences and trees until raw
CWD (chronic wasting disease) correct answers muledeer, elk
Kuru correct answers Human tribes in New Guinea
Cannibal ritual
Creutzfeldt-Jakob Disease (CJD) correct answers rare human disease
-200 cases per year in the US
, -Probable genetic link or contact with tissues of infected people (tissue grafts)
viruses in latin correct answers poison
general viral characteristics correct answers -10 - 100 X's smaller than most bacteria.
-Obligate intracellular parasites
-Do carry own genetic information
virion correct answers mature, infectious, complete viral particles (NA + protein coat)
capsid correct answers protein coat; Made up of individual subunits called "capsomeres"
-Functions to protect genetic info.
-Functions in attachment to host cells
capsomeres correct answers are made up of one or few kinds of protein molecules
envelope correct answers Lipid envelope found on some viruses
Acquired from passing through host cell membrane
Enveloped viruses lose correct answers infectivity if envelope is destroyed
Paplomeres or spikes correct answers Found on some viruses
Often used for attachment
Helical, Icosahedral or cubic, and Complex or combined correct answers Three Basic Shapes
(virus)
helical shaped (virus) correct answers -Cylinder w/ identical capsomeres in a spiral
arrangement
-nucleic acid coiled inside
Icosahedral or cubic (virus) correct answers -20-sided figure, each side equilateral
-Often appear to be spherical
pleomorphic correct answers the ability to alter their shape or size in response to
environmental conditions.
pleomorphic correct answers virus structure can be
(Double-stranded DNA) ds-DNA (Single-stranded DNA) ss-DNA (Double-stranded RNA)
ds-RNA (Single-stranded RNA) ss-RNA correct answers virus 4 types of Nucleic acid
virus classifation correct answers -Based on the structure of capsid
-Based on host range
-Based site of replication
-Based type of transmission
lytic cycle correct answers 1. attachment
2. penetration
3. biosynthesis
