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

Example Input: A diploid cell is a cell with two chromosomes.
Example Output: What kind of cell is a cell with two chromosomes?

Example Input: You call elements that contain only atoms of one type of element native elements.
Example Output: What do you call elements that contain only atoms of one type of element?

Example Input: Animals produce most of enzymes chemicals, which are needed to synthesize the fatty acids they need.
Example Output:
Animals produce most of what chemicals, which are needed to synthesize the fatty acids they need?