connective tissue
protein
Ribosome.
Ribosomes
Protein.
Ribosomes are composed mainly of protein and RNA.
Ribosomes are composed of protein and RNA.
Fingernails and hair (and claws, hooves and horns on animals) is composed of a protein called "Keratin".
thick filaments
protein
simple protein and non protein substance.
Ribosome.
Striated muscle appears stripped due to the parallel alignment of many muscle fibers side to side with their sarcomeres lined up. The striations across each cell are caused by the overlap of the contractile proteins actin and myosin. Actin is the main protein of thin filaments and myosin is in the thick filaments. When actin and myosin are overlapped the darkest band appears( A band), when only actin is present a lighter band, is seen (I band).
Ribosomes
Amino acids
A protein.