Page 1Page 2Page 3Page 4Page 5Page 6Page 7-1-BIOS 100 - Exam 5 - Fall, 2005 Name: ___________________________________ Michael Muller, Instructor 5 December, 2005 TA: ______________________________________ The exam consists of 52 multiple guess questions and six pages. Please bubble in your name, last namefirst. Please be sure you use the name with which you are registered here at UIC and not a nickname. Ifyou only learn one thing from college, please learn that whenever you fill out one of these forms, youshould use a #2 pencil. Pen just won't work. Really, it won't. Good luck! Oh, the answer to question 27 isC. Some people did comment on exam four’s freebies - thanks! 1. Which of the following statements (A-D) about the process of science is FALSE. Ifstatements A-D are true, then choose E. A. A good scientist is always trying to disprove their hypothesesB. Science is a dynamic process, with many ideas constantly changing in light of newideas and data.C. Hypotheses and theories can never be known to be trueD. Science involves both inductive and deductive reasoningE. All of the above statements about science are TRUE2. Which of the following is NOT a property of water?A. Ice is less dense than liquid waterB. Water is a polar molecule (OK, if you choose this one, I will fail you! :)C. Water has a low specific heatD. Water has high surface tensionE. Water has strong adhesive and cohesive properties3. In the small intestine, chymotripsin is an enzyme that breaks down proteins into amino acids. This type of reaction is called:A. Hydrolysis B. Condensation C. Peptolysis D. Catabolysis4. Chitin, startch, and cellulose are all examples of:A. Polysaccharides B. Lipids C. Nucleic Acids D. Proteins5. Which of the following properties of enzymes is FALSE?A. Enzymes function by lowering the activation energy of the reactionB. Enzymes only catalyze the forward reaction - they have no effect on the reverse reactionC. Allosteric inhibitors change the enzyme shape, which lowers enzyme activityD. Most enzymes are sensitive to external temperature and pHE. The active site is where substrates bind to enzymes6. Which of the following statements about feedback inhibition is FALSE?A. Feedback inhibition often involves allosteric inhibitionB. Feedback inhibition is a common mechanism utilized by cellsC. During feedback inhibition, the products of a reaction sequence can inhibit the activityof an enzymeD. Isoleucine is an enhancer of the enzyme threonine deaminase-2-7. Which of the following cellular structures is NOT part of the endomembrane system?A. Plasma membrane B. Rough endoplasmic reticulumC. Golgi apparatus D. ChloroplastE. Outer nuclear envelope8. Which organelle is incorrectly matched with its function:A. Rough endoplasmic reticulum – protein synthesisB. Golgi apparatus – protein sorting and distribution of proteinsC. Mitochondria – cellular respirationD. Lysosyme – synthesis of ribosomesE. Central vacuole – storage9. Which of the following statements about the plasma membrane is FALSE?A. The plasma membrane is primarily composed of phospholipidsB. Proteins, cholesterol, and other molecules are unevenly distributed throughout theplasma membraneC. Phospholipids in the plasma membrane are amphipathicD. The plasma membrane is very fragile and if even slightly ruptured, will burstE. The plasma membrane is fluid10. Which of the following molecules has the least ability to diffuse across a plasma membrane?A. H2O B. O2C. H+D. C2H6E. NH3Use the key below to answer questions 11 and 12I. Simple Diffusion II. OsmosisIII. Facilitated Diffusion IV. Active Transport11. Which of the above utilize carrier proteins?A. IV only B. III only C. III, IV D. II, III, IV E. I, II, III, IV12. Which of the above do not require energy?A. I only B. II only C. I, II D. I, II, III E. I, III13. During non-cyclic photophoshporylation, from where does PSII (P680) regain its lostelectron?A. PSI (P700) B. NADPH C. H2O D. O2E. CO214. Which of the following statements about the light-dependent reactions of photosynthesis isFALSE?A. Non-cyclic photophosphorylation produces both NADPH and ATPB. Cyclic photophosphorylation produces only ATPC. Oxygen is produced in both cyclic and non-cyclic photophosphorylation D. The molecules in the electron transport chain are all bound to the thylakoid membraneE. During non-cyclic photophosphorylation, H+ is pumped across the thylakoid membrane15. During the light independent reactions, which of the following is NOT used to produceglucose?-3-A. O2B. CO2C. NADPH D. ATP E. All are used 16. During photorespiration, what is being added to RuBP by Rubisco?A. CO2B. NH3C. O2D. H2O E. None of the above17. Which process produces the most ATP?A. Glycolysis B. Conversion of pyruvate to Acetyl CoAC. Krebs Cycle D. Oxidative phosphorylation18. During oxidative phosphorylation, what is the final electron acceptor?A. NADH B. O2C. CO2D. ATP E. H2O19. Which of the following statements is FALSE?A. Alcohol fermentation produces CO2 but no ATPB. Lactic acid fermentation oxidizes NADH to NAD+C. Glycolyisis is performed by all life on earthD. The Krebs cycle produces all of the CO2that you exhale E. Oxidative phosphorylation utilizes NADH as a source of electrons20. Which enzyme is incorrectly matched with its function?A. Topoisomerase – removes supercoilsB. Ligase – cuts DNAC. Helicase – unwinds DNAD. DNA polymerase – “reads” DNA and forms a compliment in a 5' to 3' directionE. Primase – creates an RNA primer21. Which statement about DNA is false?A. DNA polymerase contains proofreading functinosB. DNA polymerase cannot synthesize DNA de novo - it must have a primerC. Telomeres are present on the ends of chromosomes in bacteria and eukaryotesD. In DNA, A pairs with T and C pairs with GE. DNA is more stable than RNA22. What is the start codon in a mRNA?A. 5' AGU 3' B. 5' GUA 3' C. 5' UGA 3' D. 5' AUG 3'23. During translation, where does the charged tRNA enter the ribosome?A. The P site B. The A site C. The E site24. In the lac operon, what binds to the operator to turn the operon off?A. The repressor protein B. Lactose C. The promoter D. RNA polymerase-4-25. With which of the following levels of eukaryotic gene control is the TATA box associated?A. Transcriptional control B. Post-transcriptional controlC. Translational control D. Post-translational