Other questions in this quiz

2. the three dimensional structure of a protein is held together by

  • hydrogen, ester and ionic bonds
  • Disulfide bonds, hydrogen and ionic bonds
  • Disulfide bridges and ester bonds
  • peptide, hydrogen and ionic bonds

3. What is the purpose of phospholipids in the cell surface membrane?

  • They create the membrane by being arranged in a bilayer with hyrophylic phosphate heads and hydrophiboc lipid tails
  • They protect the membrane
  • They create the membrane by being arranged in a bilayer with hydrophobic phosphate heads and hydrophilic lipid tails
  • They let chemicals in and out of the cell

4. What is a primary structure?

  • The sequence of amino acids that make a polypeptide chain joined by peptide bonds
  • The helix or pleated sheet shape
  • The sequence of amino acids that makeup a polypeptide chain joined by ester bonds
  • The sequence of globular proteins that makeup a polypeptide chain joined by peptide bonds

5. Lipids are insoluble in water becuase they

  • Are oddly shaped
  • Contain too many disulfide bonds
  • Are hydrophobic
  • Are hydropholic

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