TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: All metabolic functions carried out by a prokaryote take place in the plasma membrane or cytosol else.

SOLUTION: All metabolic functions carried out by a prokaryote take place in the plasma membrane or where else?

PROBLEM: Platelets blood component serves both structural and molecular functions in blood clotting.

SOLUTION: What blood component serves both structural and molecular functions in blood clotting?

PROBLEM: Even the age of earth has been estimated on the basis of radioisotopes.

SOLUTION:
Even the age of earth has been estimated on the basis of what?