Mitochondrion – a mini power plant
Schematic illustration of cellular respiration. The mitochondrion is the cell’s “power plant".
The entire process takes place partly in the cell plasma and partly in the mitochondrion, an organelle in the cell. Glycolysis takes place in the cell plasma, while the citrate cycle and respiratory chain occur in the mitochondrion. In this way a total of 36–38 ATP molecules are produced per glucose molecule: Glycolysis and citrate cycle each produce two ATP molecules, and the respiratory chain 32–34 ATP molecules. The mitochondrion can therefore justifiable be called a “mini power plant".
Information and ideas:
It would make a good research project in biology class in grades 11 – 12 to find out the process by which ATP is consumed in muscular contraction.