Multiple Choice
The lac regulatory system is important to bacteria because the sugar lactose
A) cannot be made by bacteria unless the genes are turned on.
B) is the most common source of food;enzymes are needed all the time.
C) is only rarely available;producing enzymes all the time is costly.
D) is incorporated into the nucleic acid of the bacteria.
E) switches the system off and on whether lactose is present or not.
Correct Answer:
Verified
Correct Answer:
Verified
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