amino acid
Carboxyl Group
two examples are carboxyl and hydroxyl examples are vinegar for carboxyl and phenol for hydroxyl there are many others
An amino acid always has an amino group and a carboxyl group. The amine group of one amino acid is capable of forming a peptide bond with the carboxyl group of another amino acid.
Generally, a fatty acid consists of a straight chain of an even number of carbon atoms, with hydrogen atoms along the length of the chain and at one end of the chain and a carboxyl group (―COOH) at the other end. It is that carboxyl group that makes it an acid (carboxylic acid).
They all have a hydrocarbon chain with a carboxyl group on the end.
Proteins are composed of amino acids, which are composed of a central Carbon atom surrounded by (bonded to) four groups; an amine, a carboxyl group, an R group (also known as a side chain), and a Hydrogen atom. When amino acids link together via peptide bonding to from polypeptides/proteins (A protein is a polypeptide), the amine group of one amino acid interacts with the carboxyl group of another. Therefore, you end up with an amine group on one end of the protein and a carboxyl group on the other. They call the end with the amine on it the "N terminus" because the chemical formula for amine is NH2 while the end with the carboxyl group on it is named the "C terminal" because the chemical formula of a carboxyl is CH2. The N terminus is the end that amino acids are added onto when mRNA is translated in protein synthesis. Therefore, we write that proteins are created N terminus to C terminus.
The hydroxyl group is an amino group and the carboxyl group is an amino acid that was one of my science questions and thats the best answer i could find. hope this helps
A fatty acid
The carboxyl group is writed -COOH.
strutural formula of the carboxyl group
amines and carboxyl