Answer:
b
Explanation:
because of you have a sperm and an egg it wont be right and the others aren't well described
The 4 classes of biological macromolecules are carbohydrates, lipids, proteins and nucleic acids.
DNA is, DNA is in prokaryotic cells, which is present in a single circular chromosome, that is located in the cytoplasm. Its in chromosomes, which is in cytoplasm, so technically, DNA is in cytoplasm.