Experiment+E_Is+Yeast+Alive?

Carbon dioxide is observed with the yeast powder and glucose Carbon dioxide is not observed with the boiled yeast solution and glucose

- shake, breaking the granule of yeast cells, hence yeast cells will be released and suspended in the solution

More carbon dioxide is produced, the higher the height of the yeast solution. (Fixed--> time) Methylene blue test the loss of electrons (oxidation) - gain of electrons (reduction) - colorless - live yeast cells lose electrons (oxidation), methylene blue gains electrons (reduction) - live yeast cells involve process of reduction, oxidation - dead yeast cells do not undergo reduction or oxidation - methylene blue molecules are small enough to be diffused into the yeast cells

Glycolysis (cytoplasm) - break down glucose (6 carbon) (does not require oxygen) (produce ATP) Krebs Cycle (mitochondrial matrix) - require oxygen Electron Transport (inner membranes of mitochondrion)