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BIO156 Quiz 3: Lessons 5 and 6




Question;Question;1 of 30;According to __________, energy;cannot be created or destroyed.;Aristotle's first principle;the first law of thermodynamics;the second law of thermodynamics;the third law of thermodynamics;Einstein's law of relativity;Question;2 of 30;Which one of the following processes;is endergonic?;the burning of wood;the release of heat from the;breakdown of glucose;the synthesis of glucose from;carbon dioxide and water;the breakdown of glucose;cellular respiration;Question;3 of 30;Anything that prevents ATP formation;will most likely;result in cell death.;force the cell to rely on lipids;for energy.;result in the conversion of;kinetic energy to potential energy.;force the cell to rely on ADP for;energy.;have no effect on the cell.;Question;4 of 30;Which one of the following is true;about the ATP molecule?;It contains two phosphate groups.;Extremely stable bonds link the;second and third phosphate groups.;It contains the six-carbon sugar;hexose.;It contains a nitrogenous base;molecule called adenine.;None of the choices are correct.;Question;5 of 30;When an enzyme catalyzes a reaction;it lowers the activation energy of;the reaction.;it raises the activation energy of;the reaction.;it becomes a product.;it acts as a reactant.;None of the choices are correct.;Question;6 of 30;Which one of the following is false?;An enzyme's function depends on;its three-dimensional shape.;Enzymes are very specific for;certain substrates.;Enzymes are used up in chemical;reactions.;Enzymes emerge unchanged from the;reactions they catalyze.;An enzyme binds to its substrate;at the enzyme's active site.;Question;7 of 30;Which of the following is a;coenzyme?;zinc;Vitamin B6;iron;iodine;hydrogen ions;Question;8 of 30;Bacterial production of the enzymes;needed for the synthesis of the amino acid tryptophan declines with increasing;levels of tryptophan and increases as tryptophan levels decline. This is an;example of;competitive inhibition.;noncompetitive inhibition.;feedback inhibition.;positive feedback.;irreversible inhibition.;Question;9 of 30;The second law of thermodynamics;states that____________.;energy can be transformed into;matter and, because of this, we can get something for nothing.;energy can be destroyed only;during nuclear reactions, such as those that occur inside the sun.;if energy is gained by one region;of the universe, another place in the universe also must gain energy to;maintain the balance of nature.;energy tends to become;increasingly dispersed and unusable.;Question;10 of 30;ATP is;the energy currency of a cell;produced by the destruction of ADP;expended in the process of;photosynthesis;produced during the;phosphorylation of any organic compound;Question;11 of 30;Which statement about energy;transformations is true?;In energy transformations, energy;is conserved or recycled.;Living organisms decrease entropy;in the universe as energy is transformed from light to chemical energy.;Energy is constantly being created;in the universe.;Entropy is constantly increasing;in the universe.;Energy transformations decrease;entropy in the universe.;Question;12 of 30;The active site of an enzyme;is where the coenzyme is located.;is a specific bulge or;protuberance on an enzyme.;is a groove or crevice on the;structure of the enzyme.;will react with only one substrate;no matter how many molecules may resemble the shape of the substrate.;rigidly resists any alteration of;its shape.;Question;13 of 30;The term anaerobic;means;without bacteria.;without ATP.;without CO2.;with O2.;without O2.;Question;14 of 30;The processes of photosynthesis and;cellular respiration are complementary. During these energy conversions, some;energy is;lost in the form of heat.;created in the form of heat.;used to create light.;All of the choices are correct.;None of the choices are correct.;Question;15 of 30;Which one of the following;statements is false? Cellular respiration;consumes glucose.;is a single chemical reaction with;just one step.;produces water.;produces carbon dioxide.;releases heat.;Question;16 of 30;During cellular respiration, the;energy in glucose;becomes stored in molecules of;ammonia.;is used to manufacture glucose.;is released all at once.;is carried by electrons.;None of the choices are correct.;Question;17 of 30;Oxidation is the __________, and;reduction is the __________.;gain of electrons, loss of;electrons;loss of electrons, gain of;electrons;loss of oxygen, gain of oxygen;gain of oxygen, loss of oxygen;gain of protons, loss of protons;Question;18 of 30;Pyruvate;forms at the end of glycolysis.;is the molecule that starts the;citric acid cycle.;is the end product of oxidative;phosphorylation.;is the end product of;chemiosmosis.;is a six-carbon molecule.;Question;19 of 30;During cellular respiration, glucose;is converted into two pyruvic acid molecules. These molecules;are each converted into a;two-carbon molecule joined to a coenzyme A molecule.;each lose a carbon atom, which is;released as CO2.;together contain less chemical;energy than was found in the original glucose molecule.;are oxidized.;All of the choices are correct.;Question;20 of 30;The end products of the citric acid;cycle include all of the following except;CO2;pyruvic acid.;ATP.;NADH.;FADH2.;Question;21 of 30;Which of the following statements;about the inner mitochondrial membrane is false?;ATP synthase is associated with;it.;It plays a role in the production;of pyruvic acid.;Electron carriers are associated;with it.;It is involved in chemiosmosis.;A gradient of H+exists;across it.;Question;22 of 30;Bacteria that are unable to survive;in the presence of oxygen are called;strict anaerobes.;aerobes.;facultative anaerobes.;chemosynthetic bacteria.;microaerophiles.;Question;23 of 30;Muscle soreness associated with;strenuous exercise is at least partly due to;an excess of ATP that builds up;during vigorous exercise.;the presence of lactate and other;metabolites produced during fermentation in muscle cells.;the large amount of carbon dioxide;that builds up in the muscle.;the accumulation of alcohol from;anaerobic respiration.;None of the choices are correct.;Question;24 of 30;The terms ?cristae? and ?matrix? are;associated with which cellular function(s)?;Glycolysis and oxidative;phosphorylation;Krebs cycle and oxidative;phosphorylation;Glycolysis and Krebs cycle;Glycolysis only;Oxidative phosphorylation only;Question;25 of 30;Which of the following statements;about glycolysis is correct?;Glycolysis occurs in the;mitochondria.;Glycolysis happens to glucose;only.;Glycolysis results in the;production of citric acid and occurs in the Golgi body.;Glycolysis results in the;production of pyruvate and occurs in the cytoplasm.;Question;26 of 30;During respiration, the greatest;amount of ATP is produced during;glycolysis.;acetyl-CoA formation.;the Krebs cycle.;oxidative phosphorylation.;Question;27 of 30;The location of the electron;transport system in eukaryotic cells is;on the inner membrane of the;mitochondria.;on the inner membrane of the;chloroplasts.;throughout the cytoplasm of the;cell.;on the inner portion of the plasma;membrane.;Question;28 of 30;The major function of the inner;membrane of the mitochondrion is the production of ATP. To carry out this;function, the mitochondrion must have all of the following except;membrane-bound electron transfer;chains.;*;enzymes for glycolysis.;ATP synthase enzymes imbedded in;the membrane.;enzymes for the Krebs cycle.;Question;29 of 30;The oxygen we breathe in is needed;for the process of respiration. Which of the following is the major role of;oxygen in respiration?;Oxygen is needed to start;glycolysis.;Oxygen carries electrons to the;electron transfer chains in the mitochondria.;Oxygen is the final electron;acceptor at the end of the electron transfer chain.;Oxygen combines with free carbons;to form carbon dioxide.;Question;30 of 30;The term "phosphorylation;refers to the;use of an enzyme to break down;ATP.;transfer of a phosphate to a;substrate - like ADP.;taking away of phosphate molecules;from enzymes.;second law of thermodynamics;relating to phosphorous function.;subtraction of a phosphate from a;substr


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