Explain what is meant by the following levels of protein
structure: 1) primary structure; 2) secondary structure; 3)
tertiary structure; and 4) quaternary structure. For secondary
structure, name each type of secondary structure, and for each
type, describe the structure and explain the roles of hydrogen
bonding in that type of secondary structure. For tertiary
structure, describe the role of hydrophobicity in tertiary
structure; also, explain how hydrophobicity affects tertiary
structure of a cytoplasmic protein and how it affects the...