Amino acids
The protein that hair is composed of is called keratin.
Ribosomes are composed of protein and RNA.
If it consists only of these two components it is a virus.
No, adipose tissue is primarily composed of fat cells, not protein.
Fingernails and hair (and claws, hooves and horns on animals) is composed of a protein called "Keratin".
Ribosome.
Chromosomes of prokaryotic cell only contain DNA while chromosomes of eukaryotic cell are composed of DNA and protein.
Ribosomes are composed largely of protein and ribosomal RNA (rRNA). They are responsible for protein synthesis in the cell by reading the messenger RNA (mRNA) and translating it into a specific sequence of amino acids to form a protein. Ribosomes exist in both prokaryotic and eukaryotic cells.
Ribosomes
A infectious agent composed of a simple strand of RNA with no protein component is called a viroid. Viroids are smaller and simpler than viruses, consisting only of a short, circular RNA molecule. They can infect plants and disrupt their normal growth processes.
A protein.
Protein