Glycolysis is thought to be the earliest form of energy production by living cells. It wasn't until the Earth's atmosphere was made up of mostly oxygen did single celled life start using the citric acid cycle and oxidative phosphorylation to produce ATP. It was also around that same time that larger, more complex multi-cellular life forms began to appear in the fossil record. Why?
A.They are completely independent from one another and happened to randomly occur at the same time.
B.Using all three processes together can create 16 times the amount of ATP per glucose molecule, meaning more complex metabolic processes can occur. C.Oxygen allowed organisms to breathe the atmosphere and begin living on land. D.Glucose became very limited and forced some organisms to get bigger so they could consume smaller ones for their delicious glucose.
Answers
Answered by
1
Answer:
cellular forms arose 2000 mya
invertebrates(multi cellular ) forms arose 500 mya
Explanation:
both appear at different time scale
oxidative phophorylation need oxygen
Similar questions