"wow your stupid" no, you're* the stupid one who doesn't answer questions right and have no proper use of grammar. Anyway, The circulatory system brings food and oxygen to the body cells.
True .
True .
The circulatory system is in constant use in humans. It is essential for the distribution of blood to and from your heart. Without it, the blood in your body would not be able to circulate. It brings oxygen and nutrients to the cells in your body as well as removes waste and toxins. The circulatory system is a system consisting of capillaries,arteries, and veins=]
Cells use anaerobic respiration when there is no oxygen available.
The red blood cells carry oxygen to the tissues, absorb CO2, then carry it away to the lungs to get rid of it. Haemoglobin is the name of this magic chemical. Some animals use a copper-based equivalent which is blue!
cells use the oxygen to release chemical energy.
The respiratory system seems like the obvious answer, but you used the word absorb. The respiratory system takes air into the lungs, but the red blood cells (erythrocytes) absorb the oxygen out of the air taken into the lungs. The circulatory system then delivers these red blood cells to the capillaries where the oxygen is traded for carbon dioxide as the cells need.
Blood cells use a protein called hemoglobin to capture oxygen.
First of all, porifera do not breathe: they respire. Oxygen diffuses through the cells
No. Animal cells use Oxygen and give off carbon dioxide as a waste product. Plant cells use carbon dioxide and give off oxygen.
Organisms use the oxygen they absorb from the air for their cells. The cells need this oxygen in order to carry out their functions.