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Chapter 16: Control Of Gene Expression

28 Questions  I  By Aggiegal8
Chapter 16: Control of Gene Expression

  
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1.  The most common form of regulation in bacteria and eukaryotes is
A.
B.
C.
D.
E.
2.  Transcriptional control-proteins increase the rate of transcription by binding to
A.
B.
C.
D.
E.
3.  All regulatory proteins have common DNA binding motifs, which are particular bends in their protein chains that permit them to interlock with the
A.
B.
C.
D.
E.
4.  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
A.
B.
C.
D.
E.
5.  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
A.
B.
C.
D.
E.
6.  Histones are tightly packed into ______, which are located within the DNA.
A.
B.
C.
D.
E.
7.  Which of the following is the hallmark of multicellular organisms?
A.
B.
C.
D.
E.
8.  Enhancers are the binding sites for the
A.
B.
C.
D.
E.
9.  The most common form of control of gene expression in both the prokaryotic and eukaryotic organisms is
A.
B.
C.
D.
E.
10.  A nucleosome contains ____ histones within its core.
A.
B.
C.
D.
E.
11.  The basic tool of genetic regulation is the ability of certain proteins to bind to specific
A.
B.
C.
D.
E.
12.  Which of the following is not true about control of gene expression?
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B.
C.
D.
E.
13.  RNA polymerase binds to a site on DNA called the
A.
B.
C.
D.
E.
14.  Proteins that bind to regulatory sequences have shapes that fit into the
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B.
C.
D.
E.
15.  The DNA-binding proteins of almost all regulatory proteins employ one of a small set of shapes that enable them to fit into the major groove of DNA. These shapes are called
A.
B.
C.
D.
E.
16.  All of the following are examples of shapes in regulatory proteins which are used to bind to DNA except the
A.
B.
C.
D.
17.  In gene regulation, negative control is exerted by a(n)
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B.
C.
D.
E.
18.  In gene regulation, a gene is "turned on" by a(n)
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B.
C.
D.
E.
19.  A bacterial gene regulatory system is likely to have all of the following except
A.
B.
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D.
E.
20.  Small RNAs can regulate gene expression. One type, called micro RNA (miRNA), acts by binding directly to
A.
B.
C.
D.
21.  Which of the following must happen for transcription to be initiated?
A.
B.
C.
D.
E.
22.  When E. coli cells produce the amino acid tryptophan, a cluster of five genes is transcribed together. This cluster of genes is referred to as the
A.
B.
C.
D.
E.
23.  The proteins necessary for the use of lactose in E. coli are collectively called the
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D.
E.
24.  Eukaryotic organisms
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B.
C.
D.
E.
25.  Which of the following statements regarding primary transcripts in eukaryotes is correct?
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B.
C.
D.
E.
26.  The enzyme -galactosidase acts on lactose to form galactose. In turn, the presence of galactose leads to expression of the enzymes responsible for the metabolism of galactose. In this case, lactose is serving as a carbon source and as a(n)
A.
B.
C.
D.
27.  Which of the following statements regarding control of the lac operon and lactose utilization in bacteria is false?
A.
B.
C.
D.
28.  You are studying the regulation of a prokaryotic operon. Experimental results suggest that the operon is governed by negative control. Based on this information, you conclude that
A.
B.
C.
D.
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