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

Q: A diploid cell is a cell with two chromosomes.

A: What kind of cell is a cell with two chromosomes?
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Q: The sun delivers power to the chemical factory chloroplasts.

A: What delivers power to the chemical factory chloroplasts?
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Q: During the synthesis phase in the cell cycle, dna replication occurs.

A:
During which phase does dna replication occur in the cell cycle?
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