enzyme: active sight(unit 3)

Question 1

secondary structure

Answer 1

polypeptide chains form orderly shapes(secondary structures)
the secondary structures are held in a shape by hydrogen bonds between the -NH of one peptide link and the -c+o of another amino acid.
the most common shape shapes of the secondary structures are coiled a helix and folded b-pleated sheet

Question 2

tertiary structure

Answer 2

the secondary structure folds into three dimensional shapes to make the tertiary structure.
it is the tertiary structure that gives the enzyme the shape of its active site.