The answer to the question is possibly A
Answer:
The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP. Hope this helps!
Explanation:
Possible brainliest?
Answer: B
Explanation:
Ammonia is so toxic that it can be transported and excreted only in large volumes of very dilute solution. As a result most terrestrial animals simply don't have access to sufficient water to routine excrete ammonia.
The main advantage of urea is its very low toxicity. Animals can transport urea in the circulatory system and store it safely in high concentrations. Also much less water is loss when a given quantity of nitrogen is excreted in a concentrated solution of urea than would be in a dilute solution of ammonia.
The American public owns all federal public lands, including National Parks, National Forests, Wilderness areas, wild and scenic rivers, and wildlife preserves. Every American has a personal stake and a guaranteed say in how these places are cared for.
I also do Acellus :)
Option C would be correct. The organ system can plays many parts at one time. Also, it is the only system listed.
Hope this helps!
