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Cards In This Set
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Capsid
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Protein coat
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Bacteriophage
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Virus that infects bacteria
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Lytic infection
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Virus commandeers the cell's reproductive machinery & begins reproducing new viruses.
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Lytic period
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Period from infection to lysis
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Virulent virus
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Virus following a lytic cycle
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Lysogenic infection
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Viral DNA is incorporated into the host genome
(longer cycle than lytic) (lysogenic longer word so longer cycle) |
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Temperate virus
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Virus in a lysogenic cycle
(may express no signs of infection on the host cell) |
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Dormant/latent
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When viral DNA remains incorporated in host DNA (provirus)
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+ stranded
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Proteins can be directly translated from RNA
(Retroviruses, AIDS) |
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- strand
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Includes measels, rabies, & flu
- compliment to mRNA, must be transcribed to + RNA before translation |
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Which of the following events does not play a role in the life cycle of a typical retrovirus
A) viral DNA is injected into the host cell B) Viral DNA is integrated into the host genome C) Gene for reverse transcriptase is transcribed & mRNA is translated inside the host cell D) Viral DNA incorporated into the host genome may be replicated along w/ the host DNA |
Viral DNA is infected into the host cell
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Mature virus outside the host cell is called a virion. A virion may contain all of the the following except
A) capsid B) envelope made from phospholipid bilayer C) core proteins D) Both DNA & RNA |
BOTH DNA & RNA
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Prior to infecting a bacterium a bacteriophage must
A) reproduce, make copies of the phage chromosomes B) integrate ite genome into the bacterial chromosome C) penetrate the bacterial cell wall completely D) attach to a receptor on the bacterial cell membrane |
Attach to a receptor on the bacterial cell membrane
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Most viruses that infect animals
A) enter the host cell via endocytosis B) do not require a receptor protein to recognize the host cell C) leave their capsid outside the host cell D) can reproduce independently of a host cell |
Enter the host cell via endocytosis
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Viruses most closely resemble
A) faculatitve anaerobes B)aerobes C) saprophytes D) parasites |
Parasites
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