Answer:
Answer is A
Explanation:
Urea consists of carbon, nitrogen and oxygen. You can find it in urine, sweat, blood and milk in mammals. In its most concentrated form, it is urine. Urea is a crystalline compound, and the nitrogen content is always at least 46 percent when dry.
It seem like there are information missing on the question posted. Let me answer this question with all I know. So here is what I believe the answer is, the catalyst has acted upon it.
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
The control center would be the nucleus.
& I believe Messenger RNA attaches to a ribosome during protein synthesis.
Skeletal muscle! (or striated muscle).
The best answer that is being described above is the RODS. Along with cones, Rods are one of the photo<span>receptor cells in the retina of the </span>eye. Unlike the cones that help with color vision, the rods focuses more on the gray scale, the reason why we can see everything in a gray scale at night or in a dark environment. Hope this helps.
