Answer: (I hope you can understand this)
Type of operon: Trp
It’s a repressible operon
Lac
It’s an inducible operon.
Environment:
Trp
It’s deactivated when tryptophan is present in the environment.
Lac
It’s activated when lactose is present in the environment.
Repressor protein:
Trp
It’s activated by tryptophan.
Lac
It’s inactivated by lactose.
Transcription:
Trp
Tryptophan binds to the repressor protein, activating it.
Lac
Lactose binds to the repressor protein, deactivating it.
Explanation:
Plato
During the Carboniferous period the Earth was very warm and moist, covered with dense forests. When the Carboniferous rainforests collapsed, most of the trees were immediately covered with mud, as everything was wet and swampy. The trees are one of the biggest natural storage for carbon. Because the trees and the large amounts of carbon trapped in them were covered, lot of carbon was removed from the atmosphere, thus from the carbon cycle. Gradually, the carbon from the trees ended up deep into the ground, which eventually turned into coal. The removal of such a high quantity of carbon from the carbon cycle resulted in a reduced Greenhouse effect, which in turn made the planet much colder.
Answer:
B) the number of different kinds of organisms present
In an experimental design, the variable the
researcher has control over and that is different for the treatment and control
groups is called the explanatory variable.
The explanatory variable can be controlled and
manipulated by the experimenter.
The correct answer between all
the choices given is the last choice or letter E. I am hoping that this answer
has satisfied your query and it will be able to help you in your endeavor, and
if you would like, feel free to ask another question.
<span> </span>
I believe the answer is a) inside
