The pH of an amino acid is determined by the nature of the side chains of that amino acid. If the side chain of an amino acid contains amine functional group the amino acid will be basic. The acidic amino acids are acidic because they have carboxylic acid functional groups at their side chain.
wait which one like all of it or what?
The answer for this question should be D) or the fourth option Protists.
The answer is D, tributary. A tributary is a small river like stream that goes into a lake, ocean, etc. I hope this helped, have an amazing day :)
