The smallest structural unit of a protein is the amino acid. The smallest functional unit of a protein is a little ambiguous, because some might consider the amino acid to be functional (after all, some can function as neurotransmitters). Or, some might consider the peptide (di, tri, etc) to be a functional unit. One could argue what exactly is the smallest functional unit of a protein.
Amino acids are the elementary bricks of proteins.
The smallest unit that makes up a hair is a protein called keratin. Keratin molecules bond together to form the structure of a hair strand, providing strength and flexibility.
The smallest unit of classification in taxonomy is a species.
If it is a molecular compound, the smallest unit is called a molecule. If it is an ionic compound, the smallest unit is called a formula unit.
A cell is the smallest unit of an organism
A molecule is a compounds smallest unit
Smallest unit of a compound is a molecule.
This smallest unit is the atom.
Alyssa Carney is the smallest unit of mass.
the smallest unit that can cary on life is cell.
The smallest unit in which evolution occurs is a population.