01:694:301 Study Guide - Midterm Guide: Branched-Chain Amino Acid, Glutamine, Lysine

biocxam 3 (chapter 3-4) 2017 (summer) Last Name Information is provided on the information sheet at the end of the exam L. Chose the best answer for the following questions (S point each) First Name which of the following amino acid is most likely to disrupt a α-helix structure? A. Val.B. Arg. 1 , C. Trp. D. Glu. E. Pro 2. which of the following has layered β-sheet structure A. globin B. fibroin C.a-keratin D. collagen E.none of these 3. Which of the following would contribute to the stability tertiary structure? A. charge-charge attraction between side chains of lysine and aspartie acid B. disulfide bond C. hydrogen bond between side chains of serine and glutamine D. hydrophobic interaction between leucine and valine E. all of the above 4. Which of the following is the major force that stabilizes the secondary structures of proteins? A. salt bridges B. dipole-induced dipole interactionC. London D. hydrogen bonding dispersion force E. all of the above Which of the following contributes to the UV absorption of a protein A. Proline 5. B. tryptophan C. Glutamate D. methionine E. All of them 6. Which of the following is correct about the amyloid" A. It is a harmful microorganism B. It is a protein resulted from a fatal mutation of a normal protein C. It is an aggregation of misfolded normal proteins D. It is a biological molecule like 'amylose E. It is a protein like amylase Which of the following is correct about a chaperone A. A protein that catalyze the folding process of another protein B. A protein prevent misfolding of another protein C. A protein that catalyze the hydrolysis of proteins D. A subatomic particle from radiation that can damage protein E. A protein catalyze hydrolysis of chaperonin 7.