A cell that has DNA suspended in cytoplasm and not a nucleus is most likely a prokaryote, which have small DNA clusters called nucleoids
That is called an insertion mutation which is a type of a frameshift mutation
depending on where you put the extra nucleotide, the amino acid sequence may look different.
I believe the candy bar increases blood sugar levels, so the body has a bit too much energy and tries to keep you moving to help burn it off or something. Sorry, not too sure
