Answer:
false
Explanation:
it's because of potential
Answer: The lac Y and lac Z genes are turned off when lactose is present. Is a false statement about E coli and the lac operon. Therefore the correct option is A.
Explanation:
Escherichia coli is an enteric bacteria that makes use of lactose operon (or lac operon) for its lactose metabolism. The lac operon is made up of three genes which includes lacZ, lacY and Lac A. These genes are expressed only when lactose is present and glucose is absent. Also the lac repressor acts as a lactose sensor while the catabolite activation protein (CAP) acts as a glucose sensor. They help in turning on and off the genes with respect to lactose and glucose levels.
The lac Y and lac Z genes are turned off (not expressed) when glucose is present and lactose absent, but are expressed when glucose is absent and lactose present. Therefore option A is a false statement.
Answer:
The Class E airspace extending upward from 700 ft or more above the surface and terminating at the base of the overlying controlled airspace.
Explanation:
The Class E airspace extending upward from 700 ft or more above the surface and terminating at the base of the overlying controlled airspace is defined as transition area.
In Class E, Instrument Flight Rules aircraft are controlled by Air Traffic Controller.
In the vast majority of areas, there are enough airports and victor airways to have Class E begin at 1,200 feet above ground level (AGL). This is known as enroute Class E airspace.
I’m pretty sure that it’s D