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

[EX Q]: Most of the digestion reactions occur in the small intestine.
[EX A]: Where do most of the digestion reactions occur?

[EX Q]: Atp or adenozine triphosphate is used for most energy functions in organisms.
[EX A]: What molecule is used for most energy functions in organisms?

[EX Q]: Like mitochondria, plastids contain their own dna.
[EX A]:
Like mitochondria, plastids contain their own what?