In E. coli, what other protein(s) is(are) synthesized when β-galactosidase is synthesized?
A) σ70 of RNA polymerase
B) RNA helicase
C) fibonuclease III
D) galactoside permease
E) All of the above.

Question

Quizplus · Accepted Answer

Galactoside permease is necessary for the uptake of lactose from the environment into the bacterial cell, and is synthesized along with β-galactosidase as part of the lactose operon in E. coli. The other options listed are not directly involved in lactose metabolism, and are synthesized independently of β-galactosidase.

In E Coli, What Other Protein(s) Is(are) Synthesized When β-Galactosidase Is