1. Each protein has a particular 3D structure which is decided by its:   tertiary structure   primary structure   secondary structure   Quaternary structure   Hint Half-n-half Clue   2. Successive amino acids in the polypeptide chains that make up a protein are held together by :   peptide bonds   N-glycosidic bonds   interprotamine disulfide bonds   phosphodiester bonds   Half-n-half Clue   3. Which of the following is not a type of protein secondary structure ?   â-pleated sheet   Turns   third level folding to form small globules   á-helix   Half-n-half Clue   4. Which of the following amino acids is polar ?   Isoleucine   Leucine   Valine   Histidine   Half-n-half Clue   5. The sequence of different amino acids in the polypeptide chain of a protein is called its :   Quaternary structure   secondary structure   tertiary structure   primary structure   Half-n-half Clue   6. Infectious self-reproducing agents consisting only of protein, with no nucleic acids (hypothesized in 1982 by Nobel Laureate Stanley B. Prusiner) are called :   proteomes   exteins   proteinoids   Prions   Half-n-half Clue   7. Which of the following is not an aromatic amino acid ?   Serine   Tyrosine   Phenylalanine   Tryptophan   Half-n-half Clue