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

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


[Q]: Photoautotrophs and chemoautotrophs are two basic types of autotrophs.
[A]: Photoautotrophs and chemoautotrophs are two basic types of what?


[Q]: 2000 times much larger can the most powerful light microscropes make an image.
[A]:
How much larger can the most powerful light microscropes make an image?