Cellular Respiration
In the mitochondria of your cells.
Blood cells use a protein called hemoglobin to capture oxygen.
oxygen oxygen
Oxygen is needed for respiration. This is how all our cells release energy. All the body cells and white blood cells therefore need oxygen. Red blood cells don't use oxygen, they undergo anaerobic respiration, but they transport the oxygen needed by other cells.
Red blood cells carry oxygen to body cells. This occurs with the assistance of hemoglobin in the cell.
Breathing is when your body is getting oxygen to your cells. When you are physically active your cells use the oxygen faster so you have to breathe faster to get the same amount of oxygen to your cells
The lungs extract oxygen from the atmosphere for body cells to use.
When you become more active your cells need more oxygen and glucose, and when your body releases energy, glucose or other organic fuels in the presence of air is called aerobic respiration. aerobic respiration is in the absence of air.
Haemoglobin. This is needed to carry oxygen around the body and occurs in red blood cells
Cells use oxygen in the process of getting energy from sugars. The oxygen is used at the very end of that process - to pick up the electrons that have passed through the electron transport chain. That's when the most ATP are made, preparing energy for the cell to use for its activities.
Cells use anaerobic respiration when there is no oxygen available.
In your muscle cells. In your case, the only fermentation your cells are going through is lactic acid fermentation (and not alcohol fermentation). Anaerobic respiration occurs in the absence of oxygen. If there is oxygen present, then your cells will go through aerobic respiration normally. However, there are times when your cells lack oxygen, as in intense exercise. When cells can do both aerobic and anaerobic respiration, it is called facultative respiration.