Answer:
The lactose present prevents the production of lactase
Explanation:
This question is describing a set of genes in bacteria called LAC OPERON. Lac operon controls the production of lactase, which is the enzyme that digests lactose. However, this gene can be regulated at the transcription level i.e caused to be transcribed or not depending on certain factors.
According to the question, lac operon, which regulates the production of enzymes will be transcribed and subsequently translated i.e. turned on when there is a substrate (lactose) that the produced enzyme will work on. However, when there is no need of the lactase enzyme or there is absence of lactose (substrate), the lac operon gene is turned off.
Note that, the statement that "The presence of lactose prevents the production of lactase" is not correct.
Stem cell are important because stem cells represent an exciting area in medicine because of their potential to regenerate and repair damage tissue .
Answer:
c
Explanation:
when to objects come together and conform or conjoin they take what make the better of one from the 2 that are malleable
The answer is lyric cycle
A bonds with T and C bonds with G
