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If by respiration you mean breathing, the substance coming in is oxygen.
What else can I help you with?
Where does oxygen come from in cellular respiration?
Mitochondrion
Where does glucose an oxygen come for to react in cellular respiration?
Glucose and oxygen enter a cell's cytoplasm for aerobic cellular respiration.
Where does glucose used in cellular respiration come from?
Food.
What is the out come of cellular respiration?
36 ATP , H2O , and CO2
What waste products come out of human cellular respiration?
Carbon dioxide
Where do the reactants come from and what happens to the products after they are made of cellular respiration?
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.
Where does glucose come from for cellular respiration?
i dont know ask Google you numpties.
Where do the substances come from in respiration?
Glucose comes from sugar in food. Oxygen comes from air we breath in. Water comes from water we drink. Carbon dioxide comes from gas we breath out. Enery comes from glucose absorbed in the small intestine.
Where does the carbon dioxide come from in cellular respiration?
The carbon dioxide in cellular respiration comes from the breakdown of glucose molecules during the process. When glucose is broken down in the presence of oxygen, carbon dioxide is produced as a byproduct.
Does a cell energy come from a nucleus?
No. The cell's energy comes from the mitochondria, which are the site of aerobic cellular respiration.
Does a cells enery come from the nucleus?
No. A cell's energy comes from the mitochondria, which are the site of aerobic cellular respiration.
What is a reactant required to begin cellular respiration?
NADH and FADH 2 among other molecules. Where do these molecules come from
