GENERAL BIOCHEMISTRY 115:404/504 | DOWNLOAD FOR QUALITY GRADES

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Part I. Answer all questions on the answer sheet. Give the answer which is most nearly correct. Unless otherwise indicäted each question has only one answer. Each question is worth two points. Ther... e is information on the last page of this exam that may be useful in answering some questions. 1. Suppose you have decided to eat this exam, as opposed to take this exam. You lack an appropriate enzyme activity required to digest the cellulose fibrils in the paper into sugar monomers that can be used to obtain energy. This enzyme activity is: A. α-D-glucosidase D. -galactosidase (BeanoTM) B. β-D-glucosidase E. sucrase (invertase) C. cellulose debranching enzyme 2. Using the definition presented in your lecture notes, which of the following is a non-classical enzyme: A. The ribozyme RNAse P D. aldolase B. The glucose transporter GLUT2 E. triose phosphate isomerase (TIM) C. asprtate transcarbamoyalase 3. The product of the fifth step of a metabolic pathway inhibits the enzyme activity of the first step. This phenomena is called: A. substrate level inhibition D. a substrate cycle B. a futile cycle E. catalytic perfection C. feedback inhibition 4. An intein is A. a protease that catalyzes that removal of peptides from mature proteins B. a non-classical enzyme C. a self splicing molecule of RNA D. a reducing agent used in catabolic reactions E. a self-splicing protein 5. Which of the following would not rotate the direction of plane-polarized light? A. D-allose B. 2-amino-D-mannose C. The aldaric acid of D-galactose D. -D-glucose – 6 phosphate E. None of the above; since all of these molecules have chiral centers they will all rotate the direction of planepolarized light. 6. Substrate channeling: A. is an irreversible covalent modification [Show More]

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