Histones are proteins that
A) are frequently associated with eukaryotic DNA
B) are frequently associated with prokaryotic DNA
C) are never found in association with DNA
D) contain a high percentage of residues with carboxylic acid side chains

Question

Quizplus · Accepted Answer

Histones are frequently associated with eukaryotic DNA and play a role in packaging and organizing the DNA into chromatin. Prokaryotic DNA does not have histones associated with it. Additionally, histones do contain many basic amino acid residues, such as lysine and arginine, which have positively charged side chains and help to interact with the negatively charged DNA backbone. They do not contain a high percentage of residues with carboxylic acid side chains.

Histones Are Proteins That