Question

Certain species of bacteria always have the ability to utilize lactose as a carbon source. These species can do this with the help of which of the following?

A. The Lac operator
B. Positive feedback
C. Negative feedback
D. The Lac operon

Answer 1

D. The Lac operon

Step-by-step explanation:

The Lac operon is comprised of 3 genes lacA, lacY and lacZ which regulate the hydrolysis of Lactose in bacteria. LacZ in particular causes the hydrolysis of the lactose into simple sugars.