<span>glucose is broken down by oxygen to release energy with carbon dioxide and water being produced as by-products of the reaction. ... The released energy is used to make a special energy molecule called Adenosine triphosphate (ATP).</span>
Energy comes from making bonds in carbon dioxide and water.
The water will flow out of the cell because there is less water outside the cell and there needs to be equal concentration
The amino acids that the protein is made up of.