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

The energy stored in the organic molecules of food ultimately comes from the sun.
The energy stored in the organic molecules of food ultimately comes from where?

Sporopollenin protects the pollen of seed plants and spores of seedless plants.
What protects the pollen of seed plants and spores of seedless plants?

The double helix dna shape forms when the two nucleotide chains wrap around the same axis.
What distinctive dna shape forms when the two nucleotide chains wrap around the same axis?