Answer:
Overreacts to an antigen.
Explanation:
Thats what an allergy is if you think about it
Proteins, lipids (fats), carbohydrates (sugars) and nucleic acids (DNA and RNA).
this might help as well - http://classroom.synonym.com/four-organic-molecules-found-living-things-22326.html
I believe it would be the last one since it is from the national institutes of heath, and that it the most reliable source.
A because binary fission copies the dna and each daughter cell gets one strand
