ANS CH385 2008-1 WPR 1

ANS CH385 2008-1 WPR 1 - CADET _SECTION _ TIME OF DEPARTURE...

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CADET ______________________SECTION ____________ TIME OF DEPARTURE ______ DEPARTMENT OF CHEMISTRY AND LIFE SCIENCE CH385 Intro to Cell Biology, Fall 08-1 TEXT: Essential Cell Biology, 2 nd ed. WRITTEN PARTIAL REVIEW I SCOPE: Lessons: 1- 12 24 September 2007 References Permitted: None INSTRUCTIONS 1. Do not mark on this examination or open it until "BEGIN WORK" is given. You will have 55 minutes for the examination. 2. There are 9 pages in this writ (not including this cover sheet). Immediately report any illegible or missing pages to the professor. Write your name in the space provided on each page. (TOTAL WEIGHT 200 Points) PART VALUE CUT POINTS A 60 B 75 C 20 D 25 E 20 Extra credit 10 TOTAL – 200 points
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Cadet ____________________ Part Weight A 60 Multiple choice questions testing simple concepts or terms. Circle the absolute best answer. (5 points each) 1. The feature that most clearly separates eukaryotes from prokaryotes is the presence in eukaryotic cells of a. ribosomes. b. oxidative phosphorylation. c. DNA molecules. d. a nucleus. 2. In polysaccharides, sugars are linked together with covalent bonds. These covalent bonds form between an –OH group on one sugar and a hydrogen on another by a _________ reaction. a. hydrolysis b. condensation c. ionic d. phosphodiester 3. An amphipathic molecule a. is water soluble. b. is water insoluble. c. has both hydrophobic and hydrophilic regions. d. is only hydrophilic. 4. In the primary structure of a protein, amino acids are joined together by a. peptide bonds. b. phosphodiester bonds. c. glycosidic bonds. d. hydrophobic bonds. 5. The activation energy of a reaction is a. the energy that will be released as the reaction proceeds. b. the amount of energy differences between all the products. c. the energy that must be added for a reaction to proceed. d. higher for condensation reactions that for redox reactions. 6. Enzymes act by a. lowering the overall free energy change of the reaction. b. decreasing the distance reactants must diffuse to interact with each other. c. increasing the activation energy. d. decreasing the activation energy. CH385 Introduction to Cell Biology WPR 1 (Academic Term 2008-1) 1
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Cadet ____________________ 7. Allosterically regulated proteins a. change conformation when the regulatory molecule binds. b. are very rare in nature. c. can not be regulated by covalent modification. d. use allo creams to stay young. 8. The cytoskeleton is used to a. maintain cell shape. b. the same in prokaryotic and eukaryotic cells. c. unchanging in cells. d. all of the above. 9. A nucleotide is a a. base found in nucleic acids. b. purine or pyrimidine base plus a five-carbon sugar. c. purine or pyrimidine base, a five-carbon sugar, and one or more phosphate groups. d. purine or pyrimidine base, a five-carbon sugar, and three phosphate groups.
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ANS CH385 2008-1 WPR 1 - CADET _SECTION _ TIME OF DEPARTURE...

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