Biology 101-09 Practice Questions

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Purdue University Calumet Biology 101-09 Practice Final Exam Questions

  
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1.  The electron transport chain energy is used to pump H+ ions into which location?
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2.  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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3.  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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4.  When biologists wish to study the internal ultrastructure of cells, they most likely would use
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5.  Evolution is biology's core theme that ties together all the other themes. This is because evolution
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6.  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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7.  Carbon dioxide (CO2) is released during which of the following stages of cellular respiration?
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8.  The dynamics of any ecosystem include the following major processes:
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9.  Who first names and described cells in 1665
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10.  All of the following statements are correct regarding the Calvin cycle of photosynthesis except:
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11.  What is the chemical mechanism by which cells make polymers from monomers?
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12.  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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13.  Humans can digest starch but not cellulose because
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14.  How many structural isomers are possible for a substance having the molecular formula C5H12?
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15.  Why is it important that an experiment include a control group?
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16.  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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17.  Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
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18.  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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19.  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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20.  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?
21.  What is the difference between covalent bonds and ionic bonds?
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22.  Which of the following contain the 9 + 2 arrangement of microtubules?
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23.  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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24.  A controlled experiment is one in which
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25.  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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26.  Which of the following is possible due to the high surface tension of water?
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27.  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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28.  Elecrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient energy, a possible result is that
29.  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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30.  Muscle cells in oxygen deprivation convert pyruvate to ________ and in this step gain
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31.  ATP is often an allosteric inhibitor of key enzymes in catabolic pathways. Which of the following statements in inconsistent with the role of ATP?
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32.  The movement of potassium into an animal cell requires
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33.  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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34.  All of the following statements are part of Charles Darwin's concept of natural selection except:
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35.  All of the following statements about glycolysis are true except:
36.  If the pH of a solution is increased from pH 5 to pH 7, it means that the
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37.  If atom 6x (atomic number 6) were allowed to react with hydrogen, the molecule formed would be
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38.  Which of the following statements is true regarding enzyme cooperativity?
39.  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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40.  Which of the following is not considered to be a wear molecular interaction?
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41.  Of the following functions, which is most important for the glycoproteins and glycolipids of animal cell membranes?
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42.  Which type of organelle is primarily involved in the synthesis of oils, phospholipis, and steriods?
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43.  What maintains the secondary structure of a protein?
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44.  Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?
45.  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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46.  An example of a hydrogen bond is the bond between
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47.  Van der Waals interactions result when?
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48.  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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49.  Who proposed that the membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids?
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50.  Which of the following contains hydrolytic enzymes?
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51.  Which of the following is a correct definition of a kilocalorie?
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52.  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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53.  The ionic bond of sodium chloride is formed when
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54.  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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55.  Which of the following statements is true about buffer solutions?
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56.  Which of the following is a trace element that is essential to humans?
57.  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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58.  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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59.  All of the following statements are true except:
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60.  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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61.  All of the following statements about NAD+ are true except:
62.  Upon chemical analysis a particular protein was found to contain 556 amino acids. How many peptide bonds are present in this protein?
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63.  What kinds of molecules pass through a cell membrane most easily?
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64.  Altering which of the following levels of structural organization could change the function of a protein?
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65.  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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66.  All of the following statements are representative of the second law of thermodynamics except
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67.  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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68.  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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69.  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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70.  Which of the following is true regarding catabolic pathways?
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71.  CAM plants can keep stomates closed in daytime, thus reducing loss of water. They can do this because they
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72.  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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73.  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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74.  Correct statements regarding ATP includeI. ATP serves as a main energy shuttle inside cells.II. ATP drives endergonic reaction in the cell by the enzymatic transfer of the phosphate group to specific reactants.III. The regeneration of ATP from ADP and phosphate is an endergonic reaction
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75.  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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76.  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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77.  Which of the following statements regarding events in the functioning of photosystem II is false?
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78.  Three or four of the following statements are true and correct. Which one, if any,is false?
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79.  The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA
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80.  The hydrogenation of vegetable oil would result in which of the following?
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81.  Which of the following is a major cause of the size limits for certain types of cells?
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82.  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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83.  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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84.  Which of the following statements about the cytoskeleton is true?
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85.  The atomic number of carbon is 6. 14C is heavier than 12C because the atomic nucleus of 14C contains
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86.  Polysaccharides, nucleic acids, and proteins are similar in that they
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87.  Phosphofructokinase is an important control enzyme. All of the following statements concerning this enzyme are true except:
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