Cell respiration is the controlled release of energy from organic compounds in cells to form ATP.
3.7.2 State that, in cell respiration, glucose in the cytoplasm is broken down by glycolysis into pyruvate, with a small yield of ATP
Glucose is the breakdown of one molecule of glucose (6 carbon) into two molecules of pyruvate (2 x 3 carbon) with a small yield of ATP.
This is the whole process. Further discussed in HL.
3.7.3 Explain that, during anaerobic cell respiration, pyruvate can be converted in the cytoplasm into lactate, or ethanol and carbon dioxide, with no further yield of ATP
Anaerobic respiration occurs in the absence of oxygen.
In order to generate small amount of energy and the two NADH, the electrons are transferred to the pyruvic acid to form lactate.
In the plants (yeast), the final product that is produced is Ethanol with is a simple 2 carbon substance and carbon dioxide per pyruvate molecule.
3.7.4 Explain that, during aerobic cell respiration, pyruvate can be broken down in the mitochondrion into carbon dioxide and water with a large yield of ATP
In the mitochondrion, the pyruvate molecule then processes through the Kreb's cycle and electron transport chain to produce water and carbon dioxide with 34-36 ATP molecules.
Although before this process is glycolysis, it is adviced to remember that oxygen was not used in glycolysis.
This is the final table of the whole process
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