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Virsuses

QuestionAnswer
Viruses are __________ w/ definet size, shape and chemical composition non cellular particules
Virology Study of Viruses
Viruses are ____________ parasites obligate intercellular
Capsid protein shell
Virial replication inside a cell usually causes death or loss of the cell
Parvovirus DNA virus that cause respiratory infections in humans
Poxvirus Group of large viruses including smallpox,
Viruses are ______________very small submicroscopic
Antibiotics _____________ affect virses do not
Virsus can infect all organinsms to include othe viruses Yes - Plant, animal, protozoa, etc
Bacterophages "phages" virus that infect a bacteria
What is the two componets that all viruses have? Neucleid acid (RNA or DNA) and capsid
T 4 phage will infect E. coli stain B
Multiplication of viruses with RNA occurs in the _______ Cytoplasm
Multiplication of viruses with DNA occurs in the _______ Nucleous
Picornaviruses RNA/naked , smallest viruses
Togaviruses RNA/enveloped, arthropod borne virus
Rhabdovirus (rabies) RNA/ bullet Shaped, broad host range Animals and Humans
Orthomyxovirus RNA/ has proteins spikes (in their envelope) that alter and create new strains
Retroviruses RNA /HIV
Flaviviruses RNA /associated with Hepatitis C (not an STD), can be transmitted through serum
Coronaviruses RNA - causes “SARS” sever acute respiratory syndrome, causes viral pneumonia
2nd step - Lytic Cycle of a Bacteriophage inject neuclic acid
2nd step - Lytic Cycle of a Animal virus phagocytosis /membrane fusion
5th step - Lytic Cycle Release
Penetration > prophage (dormant) 2nd step in Lysogenic Cycle (bacteriophage)
Dormant prophage become active again due to: stress, UV light, illness, etc
A bacteriophage leaves protein coat is ____ left outside the cell
A animal virus protein coat removed by lysomes in the host cell
Release in a Bacteriophage Lysis
Release in a Animal virus Lysis of budding
Herpes Viruses DNA/can remain latent in neurons, brought on by stress, UV light, illness
H. simplex 1 DNA/cold sores
H. simples 2 DNA/genital (danger childbirth)
H. zoster DNA/chicken Pox / shingles
Pox viruses DNA
Papillomaviruse DNA/Cervical Cancer
Negri bodies dark staining regions in the brains of rabid animals
Oncogenic Viruses Cause Cancer
Hep B and Hep C associated with liver cancer
HPV (Human Papillomavirus) cause warts, associated with cervical cancer
Epstein Barr Virus Burketts Syndrome
drugs that prevent replication of a virus Acyclovir & Valtrex
Acyclovir & Valtrex Guanine analog
Tamiflu drug that interfers with viral attachment
interferon protein secreted by virial infected cell
interferon helps cells prevent viral infection / prepare for viral attack
A bacterium with viral DNA embedded in its DNA Prophage
Animal cell with viral DNA embedded in its DNA Pro Virus
Rhino Virus Common Cold, 100+ types, constanly mutate
This virus causees inflammation on the liver (CA) and is #1 reason for patients to be on the liver transplant list (90% are former drug users) Flaviviruses
HIV has the enzyme “reverse transcriptase” that make DNA from RNA and infects “T4” helper cells
The presence of HIV is confirmed by testng for antibodies
This virus cause Yellow Fever & Encephalitis Togaviruses
Togaviruses RNA, enveloped, arthropod borne virus (mosquito)
Hepatodnaviruses cause HepB&C, has the enzyme “reverse transcriptase”, can be an STD
Transduction When a virus transfers DNA from to host to another cell
Thymine Analog Neveronimidase inhibitor ATZ
Make a lot of DNA form a little DNA PCR -polymerase Chain Reaction
R-PCR (polymerase Chain Reaction) detect RNA virus, test for Hep C
Created by: Chicago1
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