The metabolic pathways of organism living today evolved over a long period of time- undoubtedly in a step wise fashion because of their complexity. Considering everything you have learned to date about the evolution of life on Earth, put the following in the order in which they might have evolved, and provide an explanation for your arrangement.
__prokaryotes capable of performing Krebs cycle
__eukaryotes capable of performing Krebs cycle
__prokaryotes capable of performing electron transport
__eukaryotes capable of performing electron transport
__prokaryotes capable of performing glycolysis
__eukaryotes capable of performing glycolysis
__prokaryotes capable of performing photosynthesis
__eukaryotes capable of performing photosynthesis
I have prokaryrotes in 1-4 in which glycolysis, photosynthesis, electron transport, and krebs. I just do not know how to arrange it for the eukaryotes.
My explanation for these pathways in prokaryotes is glycolysis does not require Oxygen. Photosynthesis requires electron transport which cannot occur in the absence of Oxygen. Krebs cannot occure without NAH_ so Electron tranposrt has to come before it because ET converts NADH to NAD+
I was thinking of Eukaryotes photosynthesis as the last one because according to endosymbiosis, eukaryptes would have engulf chloroplasts after mitochondria because many eukaryotes have mitochondria and not chloroplasts.
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