Carboxyl groups are highly polar and can act as weak acids.
Alcohol
It's the carboxylic acid functional group (COOH).
The functional group in an organic acid is -COOH.
The thiol group is on arginine, which is a polar amino acid, but the electronegative difference between sulfur and hydrogen is negligible. To be on the safe side and in conformation with your teacher say it is polar, but put in that electronegativity qualifier.
It is a carboxyl functional group, consisting of a carbonyl and hydroxyl group. It is an ACID [moiety].
Alcohol
It's the carboxylic acid functional group (COOH).
The functional group in an organic acid is -COOH.
The thiol group is on arginine, which is a polar amino acid, but the electronegative difference between sulfur and hydrogen is negligible. To be on the safe side and in conformation with your teacher say it is polar, but put in that electronegativity qualifier.
It is a carboxyl functional group, consisting of a carbonyl and hydroxyl group. It is an ACID [moiety].
The amine group is NH2. But to form an anino acid you also need to have a COOH group. An amino acid contains the highly nucleophilic Nitrogen lone pair. In acid conditions the NH3 is formed from the dissociation of the acid functional group coordinated onto the Nitrogen forming a zwitter ion. HOOCRNH2 +H2O <---> -OOCRNH2 + H3O+ <---> -OOCRNH3+ + H2O
There are two functional groups: 1. Carboxyl group 2. Ester group
As you can see here this is the equation of acetic and stearic acid.it shows how they are different from each other. This is because acetic acid reacts much more exp[losively with water.
The R groups of amino acids cause the difference in amino acid. The R group is joined at the alpha carbon of amino acid. There are four group joined at one carbon, viz. an acid group --COOH, and an amino group --NH3, one hydrogen and a functional group (R group). Except R group all the groups are same in every amino acid. So on the basis of R group i.e., functional group, there occur differences EITHER it is polar or non-polar nature OR acidity or basicty.
Carboxylic acid
Carboxyl and amino group
carboxyl