Question

The metabolic pathway of organisms living today evolved over a long period of time – likely in a stepwise fashion because of their complexity. Arrange the following processes in the order in which they might have evolved, and explain the reasoning for your arrangement.
KREBS CYCLE
ELECTRON TRANSPORT CHAIN
GLYCOLYSIS
PHOTOSYNTHESIS

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1)Glycolysis
2)Photosynthesis
3)Electron transport
4)Krebs cycle


Glycolysis evolved first long back and hence known as ancient metabolic pathway. During evolution, life first evolved with no oxygen. Glycolysis can occur even under the anaerobic...

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