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

Q: The discovery of ribozymes nullified the idea that all biological catalysts are proteins.

A: What nullified the idea that all biological catalysts are proteins?
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Q: Temperature and ph level are important in the activity of an enzyme.

A: Temperature and what other environmental factor are important in the activity of an enzyme?
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Q: Under a crushed sugar cube is added and the water is stirred conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature.

A:
Under which conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature?
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