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

[EX Q]: Diffusion process helps absorptive protists absorb food molecules across their cell membranes.
[EX A]: Which process helps absorptive protists absorb food molecules across their cell membranes?

[EX Q]: Platelets blood component serves both structural and molecular functions in blood clotting.
[EX A]: What blood component serves both structural and molecular functions in blood clotting?

[EX Q]: Similarity of crystal structures is used to categorize minerals non-living materials.
[EX A]:
Similarity of crystal structures is used to categorize what non-living materials?