In addition to air and
water, our body constantly needs regular inflow of food, which provides the
energy reserves necessary for movement, breathing, thermoregulation, heart,
blood circulation and brain activity. In the process of digestion of food
decays to individual glucose molecules which then fall through the intestinal
wall into the bloodstream. With blood flow glucose transported to the liver,
where it is filtered and delayed in reserve. The pituitary gland supplies the
pancreas and thyroid glands signal to the release of hormones that cause the
liver to throw out the accumulated glucose in the bloodstream, and then
delivers it to the blood to the organs and muscles that are in need of it. Having achieved the
desired body glucose molecules penetrate into the cells, where it is converted
into a source of energy that is available for use by cells. Thus, the process
of continuous energy supply agencies depends on the level of glucose in the
blood.
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.
Answer: Carbon Dioxide, Nitrogen, Argon, and oxygen.
Explanation: Earth's atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements.
Answer:
Stem cells are primal cells found in all multi-cellular organisms. They retain the ability to renew themselves through mitotic cell division and can differentiate into a diverse range of specialized cell types.
Explanation:
In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing specialized cells.
El ser humano se encuentra en los niveles tróficos correspondientes a los consumidores, específicamente, un omnívoro -capaz de consumir tanto vegetales como carne- por lo que ubicarlo en un nivel trófico resulta complicado.Nov 7, 2016
