Site MapHelpFeedbackChapter 4 Quiz
Chapter 4 Quiz
(See related pages)





1Cellular metabolism refers to the collective total of chemical processes that occur within living cells.
A)True
B)False


2Energy can exist in either of two states: kinetic or potential.
A)True
B)False


3The first law of thermodynamics states that energy cannot be created or destroyed although it may change from one form to another; the second law states that the structure of systems proceeds toward increasing entropy.
A)True
B)False


4Which of the following is incorrect?
A)Exergonic—requires that free energy is lost from the system
B)Endergonic—requires the addition of free energy to the system
C)Enzymes—inorganic catalysts
D)Activation energy—energy that must be supplied to stress bonds
E)Cofactors—small nonprotein groups associated with enzymes


5An enzyme functions by associating in a highly specific way with its substrate, the molecule whose reaction it catalyzes.
A)True
B)False


6The binding of enzyme to substrate forms a(n)…
A)Ligand
B)Catalyst
C)Coenzyme
D)Enzyme-substrate complex
E)None of the above is correct


7Enzymes:
A)Are highly specific and catalyze only one reaction
B)Only affect the reaction rate
C)Are stable and may repeat their specific reaction billions of times
D)Participate in reversible reactions
E)All of the above are correct


8An enzyme associates its substrate in a highly specific fit.
A)True
B)False


9ATP is formed as oxygen ions flow down the electrochemical gradient through ATP synthase molecules located in the mitochondria.
A)True
B)False


10Enzyme-catalyzed reactions are not reversible.
A)True
B)False


11Animals are aerobes that use oxygen as the final electron acceptor in the electron transport chain in the manufacture of ATP.
A)True
B)False


12When a molecule of glucose is completely oxidized in the presence of oxygen nearly 20 times the energy is released than when it is only degraded to the stage of pyruvic acid.
A)True
B)False


13In the presence of oxygen, cellular respiration involves several interconnected stages:
A)Glycolysis
B)Krebs cycle
C)Electron transport chain
D)All of the above are phases of complete cellular respiration
E)None of the above is correct


14Which of the following is mismatched?
A)Pyruvic acid—a 3-carbon fragment
B)Acetyl Coenzyme A—oxidation in Krebs cycle provides energized electrons to generate ATP
C)NADH and FADH2—carriers of hydrogen ions
D)Electron transport chain—chemiosmotic coupling
E)All of the above are correct


15The net yield from the complete respiration of one molecule of glucose is about 36 ATP.
A)True
B)False


16Anaerobic glycolysis is only one-eighteenth as efficient as complete oxidation of glucose to carbon dioxide and water, but its key virtue is that it provides some high-energy phosphate in situations in which oxygen is absent or in short supply.
A)True
B)False


17Which of the following fuels supply the greatest energy reserve in the body?
A)Proteins
B)Carbohydrates
C)Nucleic acids
D)Stored fats
E)None of the above is correct


18Before an amino acid molecule may enter the fuel depot, nitrogen must be removed by deamination or by transamination, forming two products, a fatty acid and ammonia.
A)True
B)False





To learn more about the book this website supports, please visit its Information Center.
(c)2006 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Notice.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


Florida: AP - OLCOnline Learning Center

Home > Chapter 4 > Mixed Quiz