Biochemistry Module 3 Exams, Exams of Biochemistry

Download Biochemistry Module 3 Exams and more Exams Biochemistry in PDF only on Docsity! Biochemistry Module 3 Exams with verified questions and answers 1. True or False: The amino acids lysine and arginine both contain sulfur atoms. - Correct answer False 2. True or False: The following secondary structure shown below is an example of a beta-turn. - Correct answer False 3. True or False. The side chain of histidine is bonded to the backbone nitrogen atom. - Correct answer False 4. True or False: The name of the molecule that binds to an enzyme is called the ligand. - Correct answer False 5. True or False: An inhibitor that binds at the active site is a coenzyme. - Correct answer False 6. Which amino acids both have an R group (side chain) with an -OH functional group? - Correct answer Ser and Thr 7. The formation of a peptide bond between two amino acids is an example of a(n) _____ reaction. - Correct answer Condensation 8. The peptide Ala-Glu-Gly-Ala-Leu has ______ . - Correct answer Four peptide bonds 9. Formally, when there are 100 or more amino acids are covalently linked together that is called a _________. - Correct answer Protein 10. What unit is used by biochemists to indicate the mass of a protein? - Correct answer Da 11. All of the 20 standard amino acids contain an R- group that is attached to the: A) α carbon B) Carboxyl group C) Amino group D) β carbon E) None of the above - Correct answer A 12. Which of the following correctly matches the amino acid with its one letter abbreviation? - Correct answer Glutamic acid, E 13. The order of amino acids in a protein is written _________. - Correct answer N to C-terminus 14. Roughly how many amino acids are there in one turn of an alpha helix? - Correct answer 3.6 15. In an alpha helix, the R groups on the amino acid residues: - Correct answer Are found on the outside of the helix spiral 16. Motifs are classified primarily by their: - Correct answer Content and arrangement of the secondary structure