AIPMT 2005 Biology Solved Paper

© examsiri.com

Question : 10 of 100

Marks: +1, -0

E. coli cells with a mutated z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because

They cannot synthesize functional beta galactosidase
They cannot transport lactose from the medium into the cell
The lac operon is constitutively active in these cells
In the presence of glucose, E. coli cells do not utilize lactose

Go to Question:

Prev Question

Next Question