Page 1Page 2Page 3Page 4Page 5Page 6Page 7-1-BIOS 100 - Summer, 2006 Name:Exam I, 14 June, 2006 (Happy Flag Day!)Michael Muller, Instructor TA:This exam consists of 54 questions over 7 pages. Please check to see that all the pages are present beforeyou begin. Use a #2 pencil and bubble in all answers. The answer to question 32 is C. Your score willbe posted on the UIC Blackboard site as soon as they are in. Good Luck! 1. Which of the following is NOT a part of the process of science?A. Asking questions about the natural world around usB. Developing hypotheses to test these questionsC. Designing experiments to test hypothesesD. Proving hypotheses to be trueE. Developing models and theories to explain the natural world2. Which of the following is not a part of a well-planned experiment:A. A high degree of precision - the more precise the data collection, the more accurate it isB. Complexity - the more complex, the betterC. Absence of systematic errorD. Calculation of a degree of uncertainty - nothing is perfect, so a good understanding of thelimitations is essentialE. All of the above are components of a well-planned experiment3. Which of the following statements (A - D) about molecular bonds is FALSE - if statementsA-D are true, then choose E.A. Everything else being equal, covalent bonds are stronger than ionic bondsB. Covalent bonds involve sharing of electrons between atomsC. Ionic bonds will dissolve in a non-polar solventD. Polar (hydrogen) bonds are weak interactions between molecules with a dipoleE. All of the above statements about chemical bonds are TRUE4. Carbon has six protons in the nucleus - if an atom of carbon gained a proton (giving it seven),what would happen?A. Nothing B. It would become an ionC. It would become an isotope D. It would become NitrogenE. It would explode5. Which of the following statements (A-D) about water is FALSE? If statements A-D are true,then choose E.. A. Your body is approximately 75% waterB. Water has a very high boiling point and freezing point when compared to other similarsized molecules C. Water has strong adhesive and cohesive propertiesD. Water can act as both and acid and a baseE. All of the above statements about water are TRUE-2-6. O16 and O18 differ in the number of ________ in the atomA. Electrons B. Protons C. Neutrons D. BosonsUse the portion of the periodic table below to answer questions 7 - 107. Which of the elements listed below would you expect to be the most electronegative (row 3)?A. Si B. P C. S D. Cl E. Ar8. Which of the elements below can typically form four covalent bonds?A. Si B. P C. S D. Cl E. Ar9. Which of the elements below would you expect to form a 2+ ionA. Na B. Mg C. Al D. Si E. P10 Which element has almost identical electronegative as Carbon?A. H B. N C. O D. Si E. F11. In which of the bonds below is carbon the most oxidized?A. C-C B. C-H C. C-O D. C-N E. None of the above12. The molecule listed below is an example of a:A. Polysaccharide B. Lipid C. Protein D. Nucleic Acid-3-13. Sickle-cell anemia is caused by a change in the seventh amino acid from Glu to Val. This isa change in the __________ structure of a proteinA. Primary B. Secondary C. Tertiary D. Quaternary14. Of the nucleotide pairs below, which pair contains two purines?A. A & G B. A & T C. C & G D. C & T15. An alpha helix is an example of a protein __________________ structure.A. Primary B. Secondary C. Tertiary D. Quaternary16. ATP has a structure very similar to a(n)A. Monosaccharide B. Amino acid C. PhospholipidD. Nucleotide E. None of the above17. Which of the following statements (A-D) about enzymes is FALSE. If statements A-D aretrue, then choose E. A. Enzymes are not consumed in a reactionB. Enzymes temporarily bind to the substrates, forming an enzyme-substrate complexC. Enzymes only catalyze the forward reactionD. Enzymes function by lowering the activation energy of a reactionE. All of the above statements about enzymes are TRUE18. The enzyme peroxidase is found in all sorts of organisms. Which of the followingorganisms would you expect to have a version of peroxidase with the highestTemperature optimum (Topt)?A. A bird B. A Human C. An oak tree D. A lizard19. What is the induced fit model of enzyme-substrate binding?A. The enzyme has an active site that perfectly fits the substratesB. The enzyme has an active site that can perfectly fit substrates, but competitiveinhibitors have an imperfect fitC. The enzyme has an active site that the substrates do not perfectly fit into - a smallconformation change takes place that strains the bonds of the substrateD. The enzyme has an active site that requires ATP energy expenditure in order to bindto the substrateE. None of the above20. Which of the graphs below represents enzyme activity as a function of temperature:A B. C.-4-21. The pH of the blood is 7.4. What would you expect to be the pH optimum of carboxylicanhydrase, an enzyme found in red blood cells?A. 5.0 B. 7.0 C. 7.4 D. 8.0 E. None of the above22. Which of the following statements (A-D) about the enzyme system that converts threonine toisoleucine is FALSE? If statements A-D are true, then choose E.A. This system is an example of positive feedbackB. Threonine deaminase has both an active site and an allosteric siteC. The concentration of isoleucine can affect the activity of threonine deaminaseD. The enzyme threonine deaminase has two conformations, only one of which will bindto the substrate, threonineE. All of the above statements about the enzyme system that converts threonine toisoleucine are TRUE23. CO2 is the proper substrate for the enzyme RuBisCo. However, O2 will also fit into theactive site. O2 is an example of a(n)A. Competitive inhibitor B. Non-Competitive inhibitorC. Allosteric inhibitor D. Allosteric enhancerE. None of the aboveMatching - use the key below to answer questions 24 - 27I. Prokaryotic cells II. Eukaryotic cells III. Achaeans24. These cells do not contain organellesA. I only B. II only C. III only D. I, III E. I, II25. These cells contain structures which evolved from endosymbiosisA. I only B. II only C. III only D. I, III E. II, III26. These cells commonly live in extreme environmentsA. I only B. II only C. III only D. I, III E. I, II27. These cells are small, typically only 5 - 10 umA. I only B. II only C. III only D. I, III E. I, II28. What is