Biology 101-09 Practice Questions

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Purdue University Calumet Biology 101-09 Practice Final Exam Questions

  
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1.  CAM plants can keep stomates closed in daytime, thus reducing loss of water. They can do this because they
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2.  If atom 6x (atomic number 6) were allowed to react with hydrogen, the molecule formed would be
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3.  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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4.  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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5.  How many structural isomers are possible for a substance having the molecular formula C5H12?
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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.  What kinds of molecules pass through a cell membrane most easily?
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8.  All of the following statements are true except:
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9.  Which of the following statements is true about buffer solutions?
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10.  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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11.  Which of the following best summarizes the relationship between dehydration reactions and hydrolysis?
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12.  Which of the following contains hydrolytic enzymes?
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13.  Humans can digest starch but not cellulose because
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14.  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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15.  All of the following statements about NAD+ are true except:
16.  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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17.  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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18.  What is the chemical mechanism by which cells make polymers from monomers?
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19.  All of the following statements are correct regarding the Calvin cycle of photosynthesis except:
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20.  An example of a hydrogen bond is the bond between
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21.  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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22.  Three or four of the following statements are true and correct. Which one, if any,is false?
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23.  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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24.  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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25.  Which of the following statements is true regarding enzyme cooperativity?
26.  All of the following statements are representative of the second law of thermodynamics except
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27.  Who first names and described cells in 1665
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28.  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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29.  Muscle cells in oxygen deprivation convert pyruvate to ________ and in this step gain
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30.  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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31.  Why does ice float in liquid water?
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32.  What maintains the secondary structure of a protein?
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33.  All of the following statements about glycolysis are true except:
34.  Why is it important that an experiment include a control group?
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35.  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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36.  The electron transport chain energy is used to pump H+ ions into which location?
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37.  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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38.  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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39.  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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40.  If the pH of a solution is increased from pH 5 to pH 7, it means that the
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41.  Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?
42.  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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43.  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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44.  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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45.  Which of the following statements is (are) true about the phosphate ion?
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46.  Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
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47.  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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48.  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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49.  What is the difference between covalent bonds and ionic bonds?
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50.  Which of the following is true regarding catabolic pathways?
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51.  Evolution is biology's core theme that ties together all the other themes. This is because evolution
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52.  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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53.  All of the following statements are part of Charles Darwin's concept of natural selection except:
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54.  Altering which of the following levels of structural organization could change the function of a protein?
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55.  Which of the following is possible due to the high surface tension of water?
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56.  Of the following functions, which is most important for the glycoproteins and glycolipids of animal cell membranes?
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57.  Which of the following properties or processes do we associate with living things?
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58.  Research indicates that acid precipitation can damage living organisms by
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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 in completely correct?
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61.  Carbon dioxide (CO2) is released during which of the following stages of cellular respiration?
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62.  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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63.  The dynamics of any ecosystem include the following major processes:
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64.  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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65.  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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66.  Which of the following would there be the greatest need for osmoregulation?
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67.  The atomic number of carbon is 6. 14C is heavier than 12C because the atomic nucleus of 14C contains
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68.  Hydrophobic substances such as vegetable oil are
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69.  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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70.  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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71.  During aerobic respiration, electrons travel downhill in which sequence?
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72.  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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73.  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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74.  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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75.  Van der Waals interactions result when?
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76.  The movement of potassium into an animal cell requires
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77.  Which of the following statements about the cytoskeleton is true?
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78.  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?
79.  Which of the following is a trace element that is essential to humans?
80.  When biologists wish to study the internal ultrastructure of cells, they most likely would use
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81.  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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82.  The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA
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83.  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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84.  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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85.  Which of the following is (are) true of natural selection>
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86.  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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87.  Which type of organelle is primarily involved in the synthesis of oils, phospholipis, and steriods?
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