Answer:
Following are the salient adaptations of villi that make them good absorbers:
Villi are single cell thick. ...
Villi have rich network of blood capillaries . ...
Most important is: Apical membranes of Villi further form many finger-like projections called microvilli or brush borders. ...
Villi have permeable membranes .
Water affects the water to oil ratio and wind makes it travel.....
Answer:
Release of electrons from reducing powers to O2 via four protein complexes allows release of small amount of energy at each step and makes the process energy efficient.
Explanation:
If NADH and FADH2 would reduce O2 directly, a large amount of energy would have been released in a single step. On the other hand, oxidation of these reducing powers through a series of electron carrier release a small amount of energy at each step which in turn is temporarily stored in form of proton motive force across the inner mitochondrial membrane.
Transfer of a pair of the electron to O2 pumps four protons by complex I, four by complex III and two by complex IV. The resultant proton motive force effectively stores the energy of electron transfer. This energy is then used to drive ATP synthesis.
Answer and Explanation:
NON-RENEWABLE RESOURCES ADVANTAGES AND DISADVANTAGES
- can be replaced in a short period of time
- can damage ecosystems
- produce carbon dioxide when burned
- are in limited supply
RENEWABLE RESOURCES ADVANTAGES AND DISADVANTAGES
- cannot be used in all regions
- hydroelectric dams
- do not produce carbon dioxide
- less expensive than alternatives
