Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: All metabolic functions carried out by a prokaryote take place in the plasma membrane or cytosol else.

A: All metabolic functions carried out by a prokaryote take place in the plasma membrane or where else?
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Q: Sporopollenin protects the pollen of seed plants and spores of seedless plants.

A: What protects the pollen of seed plants and spores of seedless plants?
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Q: Protists are thought to be the oldest eukaryotes.

A:
What is thought to be the oldest eukaryotes?
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