Pyruvate, the end product of glycolysis, follows different catabolic pathways depending on the:

Explanation

Pyruvate, the end product of glycolysis, can undergo various metabolic pathways depending on the organism and its metabolic conditions. In eukaryotes, the presence of mitochondria allows for aerobic respiration, converting pyruvate into acetyl-CoA for entry into the Krebs cycle. In the absence of oxygen or in organisms like yeast, pyruvate can be converted into ethanol or lactic acid through fermentation. Therefore, both the organism's characteristics and the metabolic conditions, such as the presence or absence of oxygen, determine the pathway.