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28 Cards in this Set
- Front
- Back
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activator protein
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a regulatory protein that binds to specific sits on DNA and stimulates transcription, involved in positive control.
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Allosteric enzyme
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an enzyme that contains two binding sites, the active site (where the substrate binds) and the allosteric site (where an effector molecule binds)
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Negative control
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a mechanism for regulating gene expression in which a repressor protein functions to prevent transcription of a gene or genes.
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Operon
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one or more genes transcribed into a single RNA and under the control of a single regulatory site.
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Positive control
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a mechanism for regulating gene expression in which an activator protein functions to promote transcription of a gene or genes.
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Quorum sensing
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a regulatory system in an organims that requires a certain density of cells of the same species be present before the regulatory events occur.
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Repressor protein
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a regulatory protein that binds to specific sites on DNA and blocks transcription; involved in negative control
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activator protein
|
a regulatory protein that binds to specific sits on DNA and stimulates transcription, involved in positive control.
|
|
|
Allosteric enzyme
|
an enzyme that contains two binding sites, the active site (where the substrate binds) and the allosteric site (where an effector molecule binds)
|
|
|
Negative control
|
a mechanism for regulating gene expression in which a repressor protein functions to prevent transcription of a gene or genes.
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|
|
Operon
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one or more genes transcribed into a single RNA and under the control of a single regulatory site.
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Positive control
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a mechanism for regulating gene expression in which an activator protein functions to promote transcription of a gene or genes.
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Quorum sensing
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a regulatory system in an organims that requires a certain density of cells of the same species be present before the regulatory events occur.
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Repressor protein
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a regulatory protein that binds to specific sites on DNA and blocks transcription; involved in negative control
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Bacteriophage
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a virus that infects prokaryotic cells
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lysogen
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a bacterium containing a prophase
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lysogenic pathway
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a series of steps that, after virus infection, lead to a state (lysogeny) where the viral genome is replicated as a prophage along with that of the host
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Lytic pathway
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a series of steps after virus infection that leads to virus replication and the destruction (lysis) of the host cell
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Plaque
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a zone of lysis or cell inhibition caused by virus infection of a law of sensitive cells
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Plus (positive)-strand virus
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a virus with an RNA or DNA genome in which the genome has the same complementarity as the mRNA of the virus
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Prion
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an infectious protein whose extracellular form contains no nucleic acid
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Provirus (prophage)
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the genome of a temperate virus when it is replicating with, and usually integrated into, the host chromosome.
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Retrovirus
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a virus whose RNA genome has a DNA intermediate as part of its replication cycle
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Reverse transcription
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the process by copying information found in RNA into DNA by the enzyme reverse transcriptase
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Virion
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the complete virus particle; the nucleic acid surrounded by a protein coat and in some cases other material
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Virus
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a genetic element containing either RNA or DNA that replicates in cells but is characterized by having an extracellular state
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Temperate virus
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a virus whose genome is able to replicate along with that of its host and not cause cell death in a state called lysogeny
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Viroid
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small, circular, single-stranded RNA tha causes various plant diseases.
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