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

All of these
Transacetylase
β-galactosidase
Galactoside permease

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Transcription
The sigma factor

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

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