Respiration is a function in which glusose and oxygen form energy. I do not know what the roots of words are.
If by respiration you mean breathing, the substance coming in is oxygen.
Mitochondrion
Food.
its aids us in respiration because it helps the food come out of our body
Glucose and oxygen enter a cell's cytoplasm for aerobic cellular respiration.
it comes from the body
36 ATP , H2O , and CO2
rachel
Carbon dioxide
from the blood stream, both carbohydrates and oxygen.
The reactants for cellular respiration, glucose and oxygen, come from the food we eat and the air we breathe. Once products like ATP, carbon dioxide, and water are produced, they are used as energy sources for various cellular processes or expelled from the body through exhalation.
In respiration, you breathe in oxygen and it goes into your blood and round to all your cells in the body and out of the cells come carbon dioxide as their waste product and that is why you breathe out carbon dioxide which is the consequense of RESPIRATION!