proteins

Question 1

secondary structure

Answer 1

• sequence of amino acids
• causes part of protein molecule to bend into helix
• beta pleated sheets
• hydrogen bonds between 1 hydrogen in amino group

Question 2

protein

Answer 2

• polymer (monomer is amino acids)
• peptide bonds : condensation reaction
  water removed
  between OH and H or amino group

Question 3

primary structure

Answer 3

order of amino acids in a polypeptide chain or sequence

Question 4

quaternary structure

Answer 4

more than 1 polypeptide chain

eg: haemoglobin

3D structure

Question 5

tertiary structure

Answer 5

further folding forming 3D shape

held by ionic hydrogen disulphide bonds

ionic and disulphide bonds between R group