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

Galactoside permease
All of these
β-galactosidase
Transacetylase

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Transcription
The location of first hexameric sequence typically found in pro-karyotic promoters is

approximately 25 bases upstream of the transcription start site
at the transcription start site
approximately 35 bases upstream of the transcription start site
approximately 10 bases upstream of the transcription start site

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