Question

The lactose present in the growth medium of bacteria is transported to the cell by the action of

• A. Beta-galactosidase
• B. Acetylase
• C. Permease
• D. Polymerase

Answer 1

The Correct Option is C

Function of Permease in Lactose Transport 

Permease is a membrane protein that helps in the transport of lactose into bacterial cells. This protein is part of the lactose operon system in bacteria like E. coli.

Beta-galactosidase (option 4) breaks down lactose into glucose and galactose, but it does not transport lactose into the cell.

Acetylase and Polymerase are unrelated to lactose transport.

Conclusion

The correct answer is: (3) Permease.