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Transcription and Regulation

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

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

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Transcription and Regulation
In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as

SV40 region
CATT
Shine Dalgarno region
TATA box

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Transcription and Regulation
Transcription by E. coli polymerase occurs in

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

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Transcription and Regulation
Transcription results in

messenger RNA
Okazaki fragments
an amino acid chain
complementary DNA

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Transcription and Regulation
Promoters for tRNAs are located

none of these
downstream from the start codon
upstream from the start codon
both (a) and (b)

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

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

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