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

Example Input: Electron transport is the final stage of aerobic respiration, when energy from the krebs cycle is transferred to atp.
Example Output: What is the final stage of aerobic respiration, when energy from the krebs cycle is transferred to atp?

Example Input: Simple kind of diffusion do small hydrophobic molecules squeeze through lipid molecules.
Example Output: What kind of diffusion do small hydrophobic molecules squeeze through lipid molecules?

Example Input: A microscope would best help a person observe the parts of a plant cell.
Example Output:
Which tool would best help a person observe the parts of a plant cell?