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Transcription Complex and Enhancers

View the animation below, then complete the quiz to test your knowledge of the concept.






1Assembly of basal transcription factors begins at the ________ sequence in the promoter.
A)GGCC.
B)AATT.
C)ACGT.
D)GAGA.
E)TATA.



2Which of the following statements about basal transcription factors is TRUE?
A)they are essential for transcription
B)they cannot increase the rate of transcription by themselves
C)they can decrease the rate of transcription by themselves
D)A and B
E)A, B and C



3Which of the following statements about enhancers is TRUE?
A)they are sequences to which activators bind
B)they are found in the promoter of a gene
C)they are only found in certain chromosomal locations
D)A and B
E)A, B and C



4The interaction of activators, coactivators and basal transcription factors involves the formation of a loop in the DNA.
A)True
B)False



5Regulatory proteins called repressors can decrease the rate of transcription by binding to the promoter.
A)True
B)False







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