Biochemistry Module 3 Exam Questions With Complete Solutions

CHEM 210 - Portage Learning True or False: The amino acids lysine and arginine both contain sulfur atoms. correct answer: False True or False: The following secondary structure shown below is an example of a beta-turn. correct answer: False True or False. The side chain of histidine is bonded to the backbone nitrogen atom. correct answer: False True or False: The name of the molecule that binds to an enzyme is called the ligand. correct answer: False True or False: An inhibitor that binds at the active site is a coenzyme. correct answer: False Which amino acids both have an R group (side chain) with an -OH functional group? correct answer: Ser and Thr The formation of a peptide bond between two amino acids is an example of a(n) _____ reaction. correct answer: Condensation The peptide Ala-Glu-Gly-Ala-Leu has ______ . correct answer: Four peptide bonds Formally, when there are 100 or more amino acids are covalently linked together that is called a _________. correct answer: Protein What unit is used by biochemists to indicate the mass of a protein? correct answer: Da 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