Answer:
The gene for beta-galactosidase turns off.
Explanation:
The gene that codifies the beta-galactosidase enzyme is part of the <em>lac</em> operon, which also contains two other genes that produce enzymes involved in the metabolization of lactose.
Between glucose and lactose, the bacteria will preferentially use glucose as an energy source. On the other hand, lactose is a dimer, and thus a series of enzymes are needed to process lactose before its use as an energy source.
If there is no lactose present, the genes contained inside this operon are turned off (the operon is repressed).
Answer:
Explanation:
The five major types are:
Predation
Mutualism
Parasitism
Competition
Commensalism
Zit sure has to be B. Pollution
The answer is c because they are easily destroyed and washed away during food storage preparation
The speed of a chemical reaction when a catalyst is present is that it. A.) It speeds up
