Biology 101-09 Practice Questions

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Purdue University Calumet Biology 101-09 Practice Final Exam Questions

  
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1.  How many structural isomers are possible for a substance having the molecular formula C5H12?
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2.  Which of the following statements in completely correct?
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3.  Consider the following: Succinic acid dehydrogenase catalyzes the reaction of succinic acid to fumaric acid. The reaction is inhibited by malonic acid, which resembles succinic acid by cannot be catalyzed by succinic dehydrogenase. Increasing the ratio of succinic acid to malonic acid reduces the inhibitory effect of malonic acid. Which of the following is correct?
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4.  Phosphofructokinase is an important control enzyme. All of the following statements concerning this enzyme are true except:
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5.  Consider a pohysaccharide consisting of 576 glucose molecules. The total hydrolysis of the poly saccharide would result in the production of
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6.  The molecular mass of glucose (C6H12O6) is 180g. To make a 0.5 M solution of glucose, you should do which of the following
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7.  Research indicates that acid precipitation can damage living organisms by
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8.  In most cells, there are electrochemical gradients of many ions across the plasma membrane even though there are usually one or two electrogenic pumps present in the membrane. The gradients of the other ions are most likely acounted for by
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9.  Which of the following best describes the relationship between the atoms described below?    Atom 1                    Atom 2        1                               3          H                              H        1                               1
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10.  Hydrophobic substances such as vegetable oil are
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11.  Which of the following is a major cause of the size limits for certain types of cells?
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12.  Because bundle-sheath cells are relatively protected from atmospheric oxygen, the level of __________ is held to a minimum in C4 plants.
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13.  What is the term used for a change in a protein's three-dimensional shape or conformation due to disruption of hydrogen bonds, disulfide bridges, or ionic bonds?
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14.  A new organism is discovered in the forests of Costa Rica. Scientists there determine that the polypeptide sequence of hemoglobin from the new organism has 72 different amino acid differences from humans, 65 differences from a gibbon, 49 differences from a rat, and 5 differences from a frog. This data suggests that the new organism
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15.  Who proposed that the membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids?
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16.  Which of the following statements is (are) true about the phosphate ion?
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17.  The chemical reactions involved in respiration are virtually identical between prokaryotic and eukaryotic cells. In eukarotic cells, ATP is synthesized primarily on the inner membrane of the mitochondria. Where are the corresponding reactions likely to occur in prokaryotic respiration?
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18.  A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water, equal to the volume of blood lost is transferred directly into one of his veins. What will be the most probable result of this transfusion?
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19.  What is the chemical mechanism by which cells make polymers from monomers?
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20.  Elecrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient energy, a possible result is that
21.  The electron transport chain energy is used to pump H+ ions into which location?
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22.  Use the following information to answer the question below. Thomas Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments to algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light.An outcome of this experiment was to help determine
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23.  All of the following statements about glycolysis are true except:
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24.  Which of the following is not considered to be a wear molecular interaction?
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25.  Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
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26.  Which property of the carbon atom gives it compatibility with a greater number of different elements than any other type of atom?
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27.  Which of the following is true regarding catabolic pathways?
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28.  Which of these is a correct representation of the hierarchy of biological organization from least to most complex?
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29.  The next questions are based on the following information. A series of enzymes catalyze the reaction X→Y→Z→A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme.Substance A functions as
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30.  Why is it important that an experiment include a control group?
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31.  The movement of potassium into an animal cell requires
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32.  If atom 6x (atomic number 6) were allowed to react with hydrogen, the molecule formed would be
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33.  What kinds of molecules pass through a cell membrane most easily?
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34.  A major function of the mitochondrial inner membrane is the conversion of energy from electrons to the stored energy of the phosphate bond in ATP. To accomplish this function, this membrane must have all of the following features except
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35.  Which of the following is a trace element that is essential to humans?
36.  All of the following statements are part of Charles Darwin's concept of natural selection except:
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37.  Which of the following statements about the cytoskeleton is true?
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38.  Why does ice float in liquid water?
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39.  Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?
40.  A new flower species has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are not being absorbed by this pigment?
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41.  All of the following statements are correct regarding the Calvin cycle of photosynthesis except:
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42.  In an experiment studying photosynthesis performed during the day, you provide a plant with radioactive carbon (14C) dioxide as a metabolic tracer. The 14C is incorporated first into oxaloacetic acid. The plant is best characterized as a
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43.  In a hypothetical world, every 50 years people over 6 feet tall are eliminated from the population. Based on your knowledge of natural selection, you would predict that the average height of the human population will
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44.  Carbon dioxide (CO2) is released during which of the following stages of cellular respiration?
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45.  Evolution is biology's core theme that ties together all the other themes. This is because evolution
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46.  The hydrogenation of vegetable oil would result in which of the following?
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47.  The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA
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48.  Which of the following contains hydrolytic enzymes?
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49.  A controlled experiment is one in which
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50.  A double-stranded DNA molecule contains a total of 120 purines and 120 pyrimidines. This DNA molecule could be composed of
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51.  Three or four of the following statements are true and correct. Which one, if any,is false?
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52.  Which of the following is (are) true of natural selection>
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53.  The ionic bond of sodium chloride is formed when
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54.  All of the following statements are representative of the second law of thermodynamics except
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55.  A young relative of yours has never had much energy. He goes to a doctor for help and is sent to the hospital for some tests. There they discover his mitochondria can use only fatty acids and amino acids for respiration, and his cells produce more lactate than normal. Of the following, which is the best explanation of his condition>
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56.  When blood glucose levels rise, the pancreas secretes insulin and as a result blood glucose levels decline. When blood glucose levels are low, the pancreas secretes glucagon and as a result blood glucose levels rise.Such regulation of blood glucose levels is an example of:
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57.  Altering which of the following levels of structural organization could change the function of a protein?
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58.  Chemical equilibrium is relatively rare in living cells. Which of the following could be an example of a reaction at chemical equilibrium in a cell?
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59.  Which of the following is a correct definition of a kilocalorie?
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60.  Which of the following statements regarding events in the functioning of photosystem II is false?
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61.  All of the following statements about NAD+ are true except:
62.  All of the following statements are true except:
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63.  An organism with a cell wall would have the most difficulty doing which process?
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64.  Muscle cells in oxygen deprivation convert pyruvate to ________ and in this step gain
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65.  During aerobic respiration, electrons travel downhill in which sequence?
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66.  What maintains the secondary structure of a protein?
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67.  Humans can digest starch but not cellulose because
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68.  A biologist ground up some plant leaf cells and then centrifuged the mixture to fractionate the organelles. Organelles in one of the heavier fractions could produce ATP in the light, while organelles in the lighter fraction could produce ATP in the dark. The heavier and lighter fractions are most likely to contain, respectively,
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69.  Which of the following would there be the greatest need for osmoregulation?
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70.  Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes?
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71.  The atomic number of carbon is 6. 14C is heavier than 12C because the atomic nucleus of 14C contains
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72.  What is the difference between covalent bonds and ionic bonds?
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73.  Collecting data based on observation is an example of ________; analyzing this data to reach a conclusion is an example of __________ reasoning.
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74.  The dynamics of any ecosystem include the following major processes:
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75.  Who first names and described cells in 1665
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76.  Van der Waals interactions result when?
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77.  Pure, freshly-distilled water has a pH of 7. This means that
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78.  One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that when placed in an aqueous solution dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). Thus,H2CO3 ⇔ HCO3- + H+If the pH of the blood increases, one would expect
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79.  If the pH of a solution is increased from pH 5 to pH 7, it means that the
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80.  Polysaccharides, nucleic acids, and proteins are similar in that they
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81.  The concept of vitalism is based on a belief in a life force outside the jurisdiction of physical and chemical laws. According to this belief, organic compounds can arise only within living organisms. Which of the following did the most to refute the concept of vitalism?
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82.  Cystic fibrosis is a genetic disease in the humans in which chloride ion channels in a cell membranes are missing or non functional.If a young male child has cystic fibrosis, which of the following would affect his fertility?
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83.  Which of the following statements is true about buffer solutions?
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84.  The question below is based on the stages of glucose oxidation listed below.A. stage I: glycolysisB. stage II: oxidation of pyruvate to acetyl CoAC. stage III: Krebs cycleD. stage IV: oxidative phosphorylation (chemiosmosis)Carbon dioxide is release during which stage(s)?
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85.  An organism is discovered that consumes a considerable amount of sugar, yet does not gain much weight when denied air. Curiously, the consumption of sugar increases as air is removed from the organism's environment, but the organism seems to thrive even in the absence of air. When returned to normal air, the organism does fine. Which of the following best describes the organism?
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86.  Research suggests that side effects from Ritalin, the drug used to treat attention deficit disorder, may be caused by contamination of enantiomers, or molecules that
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87.  The nuclear lamina is an array of filaments on the inner side of the nuclear membrane. If a method were found that could cause the lamina to fall into disarray, what would you expect to be the most likely consequence?
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