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Biology 101-09 Practice Questions

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Purdue University Calumet Biology 101-09 Practice Final Exam Questions

  
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1.  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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2.  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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3.  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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4.  Which of the following is one of the ways that the membranes of winter wheat are able to remain fluid when it is extremely cold?
5.  Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be
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6.  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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7.  Why is it important that an experiment include a control group?
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8.  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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9.  The ionic bond of sodium chloride is formed when
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10.  Which of these is a correct representation of the hierarchy of biological organization from least to most complex?
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11.  What is the difference between covalent bonds and ionic bonds?
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12.  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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13.  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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14.  Which of the following contains hydrolytic enzymes?
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15.  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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16.  Which of the following statements in completely correct?
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17.  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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18.  Which of the following is a correct definition of a kilocalorie?
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19.  What is the chemical mechanism by which cells make polymers from monomers?
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20.  Which type of organelle is primarily involved in the synthesis of oils, phospholipis, and steriods?
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21.  Polysaccharides, nucleic acids, and proteins are similar in that they
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22.  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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23.  Which of the following is a trace element that is essential to humans?
24.  The first law of thermodynamics states that energy can be neither created nor destroyed. For living organisms, which of the following is an important consequence of the first law?
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25.  Which of the following is true regarding catabolic pathways?
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26.  The dynamics of any ecosystem include the following major processes:
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27.  Which of the following statements is (are) true about the phosphate ion?
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28.  Why does ice float in liquid water?
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29.  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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30.  CAM plants can keep stomates closed in daytime, thus reducing loss of water. They can do this because they
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31.  When biologists wish to study the internal ultrastructure of cells, they most likely would use
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32.  Which of the following statements is true about buffer solutions?
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33.  Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large and complex lipids. Which cellular organelle must be involved in this?
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34.  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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35.  Which of the following would there be the greatest need for osmoregulation?
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36.  Research indicates that acid precipitation can damage living organisms by
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37.  The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA
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38.  Hydrophobic substances such as vegetable oil are
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39.  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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40.  If the pH of a solution is increased from pH 5 to pH 7, it means that the
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41.  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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42.  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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43.  Which of the following is possible due to the high surface tension of water?
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44.  Which of the following is (are) true of natural selection>
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45.  Which of the following statements about the cytoskeleton is true?
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46.  Who first names and described cells in 1665
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47.  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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48.  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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49.  Pure, freshly-distilled water has a pH of 7. This means that
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50.  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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51.  An example of a hydrogen bond is the bond between
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52.  Phosphofructokinase is an important control enzyme. All of the following statements concerning this enzyme are true except:
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53.  The movement of potassium into an animal cell requires
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54.  Of the following functions, which is most important for the glycoproteins and glycolipids of animal cell membranes?
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55.  Muscle cells in oxygen deprivation convert pyruvate to ________ and in this step gain
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56.  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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57.  The atomic number of carbon is 6. 14C is heavier than 12C because the atomic nucleus of 14C contains
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58.  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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59.  All of the following statements are part of Charles Darwin's concept of natural selection except:
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60.  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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61.  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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62.  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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63.  Which of the following is a major cause of the size limits for certain types of cells?
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64.  Which of the following statements is true regarding enzyme cooperativity?
65.  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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66.  During aerobic respiration, electrons travel downhill in which sequence?
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67.  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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68.  Which of the following is not considered to be a wear molecular interaction?
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69.  Who proposed that the membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids?
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70.  Altering which of the following levels of structural organization could change the function of a protein?
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71.  The hydrogenation of vegetable oil would result in which of the following?
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72.  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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73.  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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74.  Which of the following contain the 9 + 2 arrangement of microtubules?
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75.  Which of the following properties or processes do we associate with living things?
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76.  Which of the following statements regarding events in the functioning of photosystem II is false?
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77.  An organism with a cell wall would have the most difficulty doing which process?
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78.  Carbon dioxide (CO2) is released during which of the following stages of cellular respiration?
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79.  A controlled experiment is one in which
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80.  Elecrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient energy, a possible result is that
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.  All of the following statements about NAD+ are true except:
83.  All of the following statements are correct regarding the Calvin cycle of photosynthesis except:
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84.  If atom 6x (atomic number 6) were allowed to react with hydrogen, the molecule formed would be
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85.  Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
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86.  What kinds of molecules pass through a cell membrane most easily?
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87.  Three or four of the following statements are true and correct. Which one, if any,is false?
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