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

[EX Q]: All enzymes have an optimal temperature and ph.
[EX A]: All enzymes have an optimal temperature and what?

[EX Q]: Protons and neutrons are made of quarks, which are fundamental particles of matter.
[EX A]: A fundamental particle of matter, protons and neutrons are made of these?

[EX Q]: In relation to electrical current, a narrow wire will have more resistance than a wide wire.
[EX A]:
In relation to electrical current, what property will a narrow wire have more of than a wide wire?