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34 Cards in this Set
- Front
- Back
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Why don't T-even phages replicate in the nucleus of bacteria?
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Bacteria don't have a nucleus
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Prokaryotes do not have ?
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membrane bound organelles, like a nucleus
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What is the enzyme used by phages to penetrate in to the bacteria and to get out of the bacteria?
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lysozyme
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T-even phages have a ? shaped head containing ?
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icosahedral
DNA |
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Name the parts of a T-even phage?
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Icosahedral capsid head, central tube, sheath surrounding central tube, collar, base plate, tail pins, fibers and lysozyme
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What is the enzyme that phages use to break apart peptidoglycan cell walls ?
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lysozyme
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What are two functions of lysozyme in bacteriophage infections?
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to get into the cell and to get out of the cell
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When viral DNA is incorporated in to host DNA of the bacetrium, it is considered the ? stage
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prophage
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In the ? stage there is combination of virus genetic material and host genetic material combined.
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provirus
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Will a virus that accidentally picks up the wrong genetic material when leaving a cell be able to infect another cell ? Why ?
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No. It will be able to attach, absorb, and penetrate but it will not be able to make a new phage, because it will have mixed bacterial DNA with its viral DNA
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The term that means causes lysis?
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lysogenic
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When genetic material from a phage is incorporated in to host cell genetic material and waits to go into the lytic stage it is considered ?
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lysogenic
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The main method of viral reproduction that also leads to cell destruction of the infected cell is ? stage
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lytic
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Bacterial chromosomes that have viral DNA incorporated in them are considered ?
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prophage
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? phages are special DNA phages that undergo absorption and penetration but are not replicated or released immediately they wait for the right circumstances.
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Temperate
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When a bacterium acquires a net trait from the temperate phage it is called ? conversion
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lysogenic
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The persistant/silent virus infection is termed ?
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lysogeny
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Passing a new or different trait in error (accidentally) to another virus is ?
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transduction
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The disease targeted for in canned goods is ? and the name of the bactrium is Clostridium ?
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botulism
botulinum |
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What are two type of viral infections in bacteria?
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lytic and lysogenic
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The term that means causes lysis?
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lysogenic
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When genetic material from a phage is incorporated in to host cell genetic material and waits to go into the lytic stage it is considered ?
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lysogenic
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The main method of viral reproduction that also leads to cell destruction of the infected cell is ? stage
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lytic
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Bacterial chromosomes that have viral DNA incorporated in them are considered ?
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prophage
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? phages are special DNA phages that undergo absorption and penetration but are not replicated or released immediately they wait for the right circumstances.
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Temperate
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When a bacterium acquires a net trait from the temperate phage it is called ? conversion
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lysogenic
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The persistant/silent virus infection is termed ?
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lysogeny
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Passing a new or different trait in error to another virus is ?
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transduction
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The disease targeted for in canned goods is ? and the name of the bactrium is Clostridium ?
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botulism
botulinum |
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What are two types of viral infections in bacteria?
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lytic and lysogenic
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Can a virus with host DNA still attach and inject genes?
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Yes, because its external parts still function properly.
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Transduction can occur in lytic and lysogenic ?
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infections
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A+T= ? H-bonds, so they are more easily ? than C+G bonds
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2
broken |
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C+G= ? H-bonds
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3
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