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Transcription and Regulation

Transcription and Regulation
Which of the following is necessary for transcription to occur?

Both DNA & RNA polymerase
RNA polymerase
DNA molecule
DNA polymerase

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Transcription and Regulation
The binding of lac repressor to DNA could be considered to be analogous to

uncompetitive inhibition of an enzyme
mixed-type inhibition of an enzyme
allosteric effects in enzyme regulation
competitive inhibition of an enzyme

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Transcription and Regulation
Transcription by E. coli polymerase occurs in

None of these
three phases known as initiation, elongation and termination
two phases known as initiation and termination
four phases known as initiation, propagation, elongation and termination

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Transcription and Regulation
Transcription factors are

promoters
proteins which bind to DNA and regulate transcription
CATT boxes
TATA boxes

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Transcription and Regulation
Each tRNA molecule has a cloverleaf secondary structure consisting of

either (a) or (b)
four stem loops
three stem loops
two stem loops

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Transcription and Regulation
RNA is synthesized on a DNA template in a process called __________ , which utilizes the enzyme __________

replication, DNA polymerase
transcription, RNA polymerase
transcription, DNA polymerase
translation, RNA polymerase

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