Answer:
c I think because I remember this from a while ago
Answer:
The correct answer is c. are relatively larger than humans.
Explanation:
The olfactory bulbs of the sheep are two or three times larger than humans, and therefore, they provide them a greater sense of smell, which in their case, is indispensable for surviving. This serves them for finding food, as well as finding their babies and other things.
An oceanographer would study this (my sister is an oceanographer)
Letter b. Divergent boundary
Hope this helps!
Answer: A
Explanation:The Trp operon is responsible for synthesis of the amino acid trytophan when it is not available in the cellular environment.
When the tryptophan is plentiful, a repressor protein binds to two molecules of tryptophan.
Thiss repressor-tryptophan complex binds to the trp operator. This binding prevents the binding of RNA polymerase, so the operon is not transcribed, and no new trptophan is produce.
On the other hand, when tryptophan levels are reduced, the inactive repressor will not bind the tryptophan operator so the operon is transcribed.
Regulation of the trp operon is determined by the concentration of tryptophan; when adequate tryptophan is present in the growth medium, there is no need for tryptophan biosynthesis.
Transcription is turned off when a high concentration of tryptophan is present, and is turned on when tryptophan is absent. The regulatory signal is the concentration of tryptophan itself.
Therefore in the absence of tryptophan, the inactive repressor cannot bind trpO, so operon gene transcription occurs.
