They help break down food particles to get energy and provide nutrients for the cells
The answer is; A
The operator site is usually associated with the promoter region of the operon. This region is bound by a repressor. The repressor acts as a physical barrier so the RNA polymerase does not bind to its promoter, or even if it binds, does not proceed to transcribe the genes.
When Barney was giving his speech and discussing each slide he was only giving definitions, symptoms, risks associated with the animal-borne diseases and treatment. This was not an effective strategy for Barney or for his class/listeners. Barney should have given pictures along with the slides so that everyone could see what the diseases looked like. Pictures also help people to have a better understanding of what they are learning/hearing.
This is because twilight or mesopelagic zone (extending from 200 meters to 1,000 meters) is the zone that contains the thermocline.
A thermocline or the thermal layer is a layer in an ocean or lake where the temperature changes more rapidly with depth than in the other layers. The thermocline in twilight zone divides the upper mixed layer from the calm deep water below.
1. Enzyme interacts with substrate.
2. Enzyme may undergo a conformational change to capture the substrate ("induced fit" model)
3. Enzyme-substrate complex may undergo several changes to form the product(s).
4. The product(s) are released.
5. The enzyme returns to its original form. It is then ready to do the cycle all over again.
