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

[EX Q]: A vapor light produces visible light by electroluminescence process.
[EX A]: A vapor light produces visible light by what process?

[EX Q]: Vesicles are basic tools of the cell for organizing metabolism, transport, and storage of molecules.
[EX A]: What are basic tools of the cell for organizing metabolism, transport, and storage of molecules?

[EX Q]: A phospholipid is a bond between the glycerol component of a lipid and phosphorous molecule else.
[EX A]:
A phospholipid is a bond between the glycerol component of a lipid and what else?