Biochemistry Module 3 Exam questions and answers latest top score.

Biochemistry Module 3 Exam questions and answers latest top score. True or False: The amino acids lysine and arginine both contain sulfur atoms. - correct answers.False True or False: The following secondary structure shown below is an example of a beta-turn. - correct answers.False True or False. The side chain of histidine is bonded to the backbone nitrogen atom. - correct answers.False True or False: The name of the molecule that binds to an enzyme is called the ligand. - correct answers.False True or False: An inhibitor that binds at the active site is a coenzyme. - correct answers.False Which amino acids both have an R group (side chain) with an -OH functional group? - correct answers.Ser and Thr The formation of a peptide bond between two amino acids is an example of a(n) _____ reaction. - correct answers.Condensation The peptide Ala-Glu-Gly-Ala-Leu has ______ . - correct answers.Four peptide bonds Formally, when there are 100 or more amino acids are covalently linked together that is called a _________. - correct answers.Protein What unit is used by biochemists to indicate the mass of a protein? - correct answers.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 D) β carbon E) None of the above - correct answers.A Which of the following correctly matches the amino acid with its one letter abbreviation? - correct answers.Glutamic acid, E The order of amino acids in a protein is written _________. - correct answers.N to C-terminus Roughly how many amino acids are there in one turn of an alpha helix? - correct answers.3.6 In an alpha helix, the R groups on the amino acid residues: - correct answers.Are found on the outside of the helix spiral Motifs are classified primarily by their: - correct answers.Content and arrangement of the secondary structure The secondary structure shown below is an example of a(n): - correct answers.Antiparallel beta sheet The overall three-dimensional shape of a single folded polypeptide is ________ structure. - correct answers.Tertiary How many classes of enzymes are recognized by the IUBMB? - correct answers.6 An enzyme requires Cr+3 for catalysis. When the enzyme contains the Cr3+ it called a/an _________. - correct answers.Holoenzyme When a substrate has just started its conversion to a new molecule, it is said to be in the ________. - correct answers.Transition state Which of the following would change the rate of an enzyme-catalyzed reaction? - correct answers.pH, concentration, and temperature Which of the following describes induced fit? - correct answers.Substrate binding induces a conformation change in the enzyme The ES stands for: - correct answers.Enzyme-substrate An organic molecule that is necessary for an enzyme's function is called a: - correct answers.Coenzyme Consider the following protein structure. A) Is the protein globular or fibrous? Explain your response in at least one complete sentence giving at least one (1) piece of evidence in your response. B) Identify at least two (2) types of secondary structure present in the following protein. - correct answers.A) Globular proteins are ball-like in shape, while fibrous proteins are extended. Note the long strands of alpha-helices. B) Point out the two types of secondary structure shown here in this protein (as indicated in the module).