Coursework.Info - Inspiration in an Instant

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Compare and Contrast the Functions and Processes of Respiration and Photosynthesis Respiration Glycolysis The first part of cell respiration can take place without oxygen, outside of the mitochondria. This set of reactions breaks the glucose molecule in half to form two new molecules called pyruvic acid or pyruvate. This releases only a very small amount of the energy trapped in the glucose molecule enough to make only four ATP molecules. It also requires the energy from two ATP molecules to get started so there is only a net increase of two ATP molecules after glycolysis is completed. To prepare for the next stage, another carbon dioxide and hydrogen atom are broken off the pyruvate, forming an acetyl molecule. This molecule is picked up by co-enzyme A. Together this is now called acetyl CoA. The job of co-enzyme A is to carry the acetyl molecule into the next series of steps. The Krebs cycle Inside the mitochondria,...

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