structure of protein

Question 1

primary structure

Answer 1

long chain of amino acids, protein differ in the variety, number and order of amino acids

Question 2

secondary structure

Answer 2

develops when either part or all of the polypeptide chain becomes coiled to produce an α-helix or becomes folded into β-sheets

Question 3

tertiary structure

Answer 3

precise, compact structure, unique to the protein that arises when the molecule is further folded and held in a particular complex shape

Question 4

quaternary structure

Answer 4

2 or more polypeptides become held together, forming a complex, biologically active molecule