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Transcription
Which of the following enzyme(s) is/are required for lactose fermentation?

Transacetylase
Galactoside permease
β-galactosidase
All of these

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Transcription
Which of these catalyzes the synthesis of RNA from a DNA template?

DNA gyrase
DNA ligase
DNA polymerase
RNA polymerase

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Transcription
A level of regulation, demonstrated by the termination of transcription if tryptophan is abundant, by the tryptophan operon in E.coli cells is called

activation
attenuation
desiccation
corepression

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Transcription
An mRNA transcript of a gene contains

all of these
a terminator
a start codon
a stop codon

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Transcription
Which of the following proteins first binds to TATA box during transcription?

TF II B
RNA polymerase
TF II A
TF II D

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