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

All of these
Galactoside permease
Transacetylase
β-galactosidase

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Transcription
The sigma factor

accomplishes DNA restriction
is responsible for recognizing the termination sequence
provides the catalytic function of cleaving off pyrophosphates during mRNA synthesis
recognizes the promotor

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