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

[Q]: 2 hydrogen, 1 oxygen atoms combine to make up a molecule of water.
[A]: What atoms combine to make up a molecule of water?


[Q]: Phosphate groups are found within phospholipids and nucleotides.
[A]: Phosphate groups are found within phospholipids and what else?


[Q]: Its metabolism halts happens when water is removed from the endospore.
[A]:
What happens when water is removed from the endospore?