Question

the model shows the process of protein folding. image: polypeptide chain, alpha helix, beta sheet, one polypeptide chain, two or more polypeptide chains order the steps to make a protein with more than one polypeptide chain. first: four blue boxes: several polypeptide chains assemble to form the folded protein; amino acids assemble into a polypeptide chain; alpha helices and beta sheets fold into a three - dimensional structure; parts of a polypeptide chain fold into shapes like an alpha helix last

Explanation:

1. First step: Protein synthesis starts with amino acids being linked together to form a polypeptide chain. This is the primary structure of a protein.
2. Second step: After the polypeptide chain is formed, parts of it start to fold into secondary structures such as alpha helices or beta sheets.
3. Third step: The secondary structures (alpha helices and beta sheets) then fold further to form the three - dimensional tertiary structure of the protein.
4. Fourth step: If the protein has more than one polypeptide chain, these chains associate with each other to form the quaternary structure of the protein.

Answer:

1. amino acids assemble into a polypeptide chain
2. parts of a polypeptide chain fold into shapes like an alpha helix
3. alpha helices and beta sheets fold into a three - dimensional structure
4. several polypeptide chains associate to form the folded protein