proteins, chapter 3

Question 1

globular protein

Answer 1

• molecules curled up into a ball (have a tight tertiary structure)
  -soluble in water
• hydrophillic and polar R-groups point outwards
• hydrophobic and non-polar R groups point inwards

Question 2

fibrous proteins

Answer 2

• Quaternary protein structure
• formed from long insoluble molecules
• high proportion of hydrophobic R-groups in primary structures
• repetitive amino acid sequences (very organaized structures)
• strong

Question 3

what are conjugated proteins

Answer 3

• globular proteins that contain a non-protein component called a prosthetic group (major part of protien funtion)

Question 4

bonds present in primary, secondary and tertiary

Answer 4

primary : peptide bonds
secondary : hydrogen bonds and peptide bonds
tertiary : disulphide bonds, hydrogen bonds, ionic bonds, peptide bonds, hydrophillic/phobic interactions