Biology Study Set 1

Biology

Quiz 16 :
Control of Gene Expression

Quiz 16 :
Control of Gene Expression

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In __________ organisms,the primary function of a gene in a cell is to participate in regulating the body as a whole and not to responding to the cell's immediate environment.
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A

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The maintenance of a constant environment in a cell is called ___________.
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B

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A bacterial cell takes advantage of changing __________ conditions through control of gene expression.
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C

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In multicellular organisms,gene _________ is critical for directing development and maintaining homeostasis.
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Eukaryotic cell mRNA transcripts tend to be very ______ and can remain in the cell for hours.
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The most common form of regulation in bacteria and eukaryotes is
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Transcriptional control-proteins increase the rate of transcription by binding to
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All regulatory proteins have common DNA binding motifs,which are particular bends in their protein chains that permit them to interlock with the
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Vertebrate cells apparently possess a protein that by binding to clusters of 5-methylcytosine ensures that the bound gene will stay in the "off" position.This control on the role of gene regulation is a result of
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Regulatory proteins shut off transcription by binding to a site immediately in front of the promoter and often even overlapping the promotor.This site is referred to as the
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Histones are tightly packed into ______,which are located within the DNA.
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Which of the following is the hallmark of multicellular organisms?
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Enhancers are the binding sites for the
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The most common form of control of gene expression in both the prokaryotic and eukaryotic organisms is
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A nucleosome contains ____ histones within its core.
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The basic tool of genetic regulation is the ability of certain proteins to bind to specific
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DNA methylation,adding a methyl group to DNA nucleotides,in vertebrates ensures that
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Which of the following is not true about control of gene expression?
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RNA polymerase binds to a site on DNA called the
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Small RNAs,once thought to be of no importance in gene expression contain
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