Term
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Definition
| The protein that controls the expression of the genes used for the lytic cycle |
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Term
| A bacteria in the state of Lysogeny is called |
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Definition
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Term
| Where is the Repressor gene? |
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Definition
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Term
| This prevents the expression of any incoming genomes of the same bacteriophage |
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Definition
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Term
| If the repressor protein is inactive, it results in: |
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Definition
| the induction of the lytic cycle |
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Term
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Definition
| If a prophage is not able to excise from bacterial genome and is maintained permenantly |
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Term
| T/F: UV can deactivate the repressor protein |
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Definition
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Term
| Examples of Temperate Bacteriophages |
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Definition
| Lambda phage and Mu transposable phage |
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Term
| Lambda phage is: A) dsDNA B)ssDNA C)dsRNA D)ssRNA |
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Definition
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Term
| The K12 strain of E. coli is a host to what type of phage? |
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Definition
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Term
| The Lambda protein is integrated into the E. coli chromosomes between: |
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Definition
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Term
| During lysogenic phage the Lambda gene ___ is expressed |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| The Pe promoter is activated by the __ gene product |
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Definition
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Term
| CII gene product is stabilized by the __ |
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Definition
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Term
| cII + cIII allows __ to be expressed |
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Definition
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Term
| The Lambda repressor binds to __ and __ |
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Definition
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Term
| Ol and Or promoters inhibit the transcription of __ |
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Definition
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Term
| Induction of Lambda lytic pathway |
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Definition
| 1) Environmental triggers. 2) Bacteria produce SOS response 3) Bacterial RecA protein has protease activity which degrates the protein |
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Term
| The Lambda prophage is excised via |
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Definition
| the lambda encoded excisionase (xis) |
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Term
| Mu transposable phage inserts in the: A) beginning B) middle C) end of a gene, causing ___ |
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Definition
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Term
| Animal viruses attach to the |
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Definition
| glycoproteins (receptor sites) found on the host's plasma membrane |
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Term
| The viral attachment structures are found within __ |
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Definition
| capsid and/or envelope surface |
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Term
| T/F: Viral attachment never leads to irreversible changes in the virus sturcture |
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Definition
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Term
| The Influenza virus attaches to the ___ of the host |
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Definition
| glycoprotein on red blood cells and mucus membranes |
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Term
| The Poliovirus attaches to the __ of the host |
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Definition
| A cell surface lipoprotein (ICAM) |
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Term
| Once a number of structures have come in contact with the host, is known as |
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Definition
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Term
| T/F: Penetration is not an energy dependent process |
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Definition
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Term
| Penetration occurs by __ or __ |
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Definition
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Term
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Definition
| an enveloped virus fuses to cell membrane and directly release the capsid into the cytoplasm |
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Term
| Fusion is a __ dependent process A) pH B) energy C) nutrient |
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Definition
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Term
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Definition
| The virus is encircled by the plasma membrane and enters in a vesicle/phagosome |
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Term
| In endocytosis, the virus is released into the cytoplasm: A) coated B) uncoated |
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Definition
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Term
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Definition
| non-enveloped viruses and orthomyxoviruses |
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Term
| When lysosomal enzymes allow the capsid and/or envelope to become separated from the nucleic acid |
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Definition
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Term
| T/F: Viruses may encode for their own enzymes that will destroy its coat |
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Definition
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Term
| T/F: Uncoating allows the virus to express its genome |
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Definition
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Term
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Definition
| The capsid only partially disintegrates and replication takes place in a structured particle |
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Term
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Definition
| Releases DNA from capsid, this depends upon viral factors released after entry |
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Term
| Orthomyxovirus, paramyxovirus, and picornavira uncoating |
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Definition
| All lose the protective envelope or capsid upon entry into the cytoplasm |
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Term
| Name the seven viral classification groups |
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Definition
| 1) dsDNA 2) ss (+)sense DNA 3)ds RNA 4)ss (+) sense RNA 5)ss (-) sense RNA 6) ss (+) sense RNA w/ DNA intermediate 7) ds DNA w/ RNA intermediate |
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Term
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Definition
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Term
| Example of ss (+) sense DNA |
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Definition
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Term
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Definition
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Term
| Example of ss (+) sense RNA |
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Definition
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Term
| Example of ss (-) sense RNA |
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Definition
| Orthomyxovirus (influenza) |
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Term
| Example of ss (+) sense RNA w/ DNA intermediate in life-cycle |
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Definition
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Term
| Example of ds DNA w/ RNA intermediate |
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Definition
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Term
| Nonenveloped, double stranded DNA, respiratory disease |
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Definition
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Term
Enveloped, double stranded DNA.
Small pox, cowpox, vaccinia |
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Definition
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Term
| Nonenveloped, double stranded DNA, papillomarvirus |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Epstein-Barr virus causes |
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Definition
Infectious mono, Nasopharyngeal cancer
African Burkitt's lymphoma, Hodgkin's disease, salivary gland cancer |
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Term
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Definition
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Term
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Definition
| disorders of leukocytes, febrile illness, hepatitis |
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Term
|
Definition
| chronic fatigue syndrome, roseola infantum and enlarged liver |
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