Name the metabolic waste product and the group of prokaryotic organisms that produce it

MICROBIOLOGY QUESTIONS OF THE DAY
1. Imagine that all microorganisms suddenly disappeared from Earth. Would animals be able to survive? Give two reasons to justify your answer. Would plants be able to survive? Give two reasons to justify your answer. If by contrast, all higher organisms (plants and animals) suddenly disappeared, what would happen to the microbes? Give two reasons to justify your answer.
2. It is thought that a metabolic waste product produced by a certain group of prokaryotic organisms made possible the evolution of the eukaryotic cell. Name the metabolic waste product and the group of prokaryotic organisms that produce it. Name the metabolic reaction that leads to this waste product being produced. Discuss two ways that the build-up of this waste product helped pave the way for the evolution of higher organisms (plants and animals).
3. There are several hypotheses for the origin of cellular life. Name and describe two opposing hypotheses. Discuss the pros and cons for each of the hypotheses. Which hypothesis is currently considered more likely? Explain.
4. What kind of energy and carbon metabolism most likely characterized early cellular life? Describe this metabolism noting the source of carbon, the source of energy, and how the energy was most likely processes to generate ATP in the cell. What type of energy metabolism would not have been possible in these early life forms? Explain why.

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