The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.
The ingredients in MacConkey agar supplies that supplies nitrogen are enzymatic digest of Gelatin, Casein and Animal tissue.
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Alcoholic fermentation occurs in yeast and produces ethyl alchol from pyruvate.
Lactic acid fermentation occurs in animals and produces lactic acid from pyruvate.
Both of these processes can proceed in the absence of oxygen.