Do all Molecules contain Carboxyl and Amino Groups?..or...?

Question

Or just amino acids?

Thanks.!

Answer 1

I think it sounds like maybe you have only recently come across the idea of molecules, when you were learning about amino acids, but actually a molecule is any combination of atoms held together by ionic or covalent bonds. I.e. anything that counts as a chemical, unless it is an element in which all the atoms are separate (e.g. helium gas). H2O is a molecule and so is H2SO4 and CH4 and all those other things. Try looking up molecule on wikipedia.

Answer 2

Carboxyl and amino groups are just 2 of a wide variety of groups that can be found on organic molecules.  There are certain sugars, for example that may contain either a carboxyl, or an amino group or both or neither.  The most common is neither.  Glucose, sucrose(table sugar) and cellulose all have neither.

All the amino acids have both at least one amino group and one carboxyl.  They must have both because they are connected by their carboxyl group to the amino group of the next amino acid, kind of like the way you connect Legos.

Answer 3

The answer is No, an amino acid is one of the few homologous series with both of those groups(I think the only one .. there might be one with another functional group but not just carboxyl and amino groups). But then there are other molecules which contain just a carboxyl group or just an amino group .. like ethanoic acid with the formula CH3COOH. and phenyl amine.. so some molecules can contain one of them but others don't. Like oxygen is O2  or ions like Na+ or Cl-. Hope it was helpful

Answer 4

gases such a oxygen kum as molekules with 2 oxygen atoms (or nitrogen, or hydrogen...).

Answer 5

No, of course not. Sodium chloride, for example, contains only sodium and chlorine.

Methane, an organic molecule, contains only single bonds.

Amino acids are typical examples of molecules containing both groups. But the amino acids incorporated in proteins are only one type, called alpha-amino acids. This means that the amino and the carboxyl groups are connected to the same carbon atom.