I'm not 100% sure of what you are asking here, but I'll have a shot at it. You must remember that the digestive system and the respiratory system are 2 different systems of the body, i.e they do not directly affect the function of the other. As such, there is no such thing as 'oxygen digested food or water'.. the oxygen we breathe enters the cell as one input and the amino acids (that you get from digestion of the food you eat) enter as one other.
So, you could still digest food 100% in a situation where there is no oxygen, and still breathe when you have not eaten any food or drink in 48 hours.
In reality, however, you couldn't digest food without oxygen, because you would suffocate, which would cause your body's ability to digest food to cease.
So, no is the answer to your question.
Our cells can respire aerobically for a short time because of the presence of oxygen in our muscles.
People need to breathe in order to stay alive. All the cells in your body require oxygen to move, work and break down food, so without oxygen you will literally die.
respiration
oxygen
oxygen
oxygen
Yes, they do use oxygen to carry out cellular respiration.
circulation
cells require oxygen to burn sugar.
First of all, porifera do not breathe: they respire. Oxygen diffuses through the cells
Yes, animal cells undergo cellular respiration to produce energy in the form of ATP. This process occurs in the mitochondria of the cell and involves the breakdown of glucose to generate ATP through a series of metabolic reactions.
Oxygen and particles of digested food get into the cells from the small intestine, from there they drain into the hepatic portal vein. The hepatic portal vein goes to the liver to filter out nutrients required and excesses are metabolized and converted.