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- 1. Multiple Choice
Where on an enzyme does the substrate bind?
active site
allosteric site
C-terminus
N-terminus
- 2. Multiple Choice
Describe the effect on the free energy of doubling the amount of enzyme.
double the free energy
half the free energy
triple the free energy
no effect on free energy
- 3. Multiple Choice
Which structure is unaffected by denaturation?
Primary
Secondary
Tertiary
Quaternary
- 4. Multiple Choice
Which environmental conditions can cause denaturation of the enzyme?
slight increase in temperature
extreme increase in temperature
decrease in temperature
extreme increase in temperature and pH changes
- 5. Multiple Choice
Which of the following will increase the rate of the reaction?
increase product
increase substrate
increase inhibitor
increase enzyme
- 6. Multiple Choice
Describe why an increase in temperature increases the rate of the reaction.
increase in temperature increases the speed/kinetic energy of particles
increase in temperature activates more enzyme to increase the rate
increase in temperature results in increase in substrate available
increase in temperature allows for a tighter fit in the active site
- 7. Multiple Choice
Describe the difference between competitive and noncompetitive inhibitors.
noncompetitive binds to active site and competitive binds to other site
competitive binds to active site and noncompetitive binds to other site
competitive is irreversible and noncompetitive is reversible binding
noncompetitive is irreversible and competitive is reversible binding
- 8. Multiple Choice
In order to maintain order and power cellular processes,
energy input must exceed energy loss
energy input equals energy loss
energy loss must exceed energy input
energy loss equals energy input
- 9. Multiple Choice
What is the process of an endergonic reaction being fueled by an exergonic reaction called?
second law of thermodynamics
energy coupling
first law of thermodynamics
endergonic/exergonic switch
- 10. Multiple Choice
Where did photosynthesis first evolve?
prokaryotic organisms
alien organisms
eukaryotic organisms
abiotic processes
- 11. Multiple Choice
What are the products of the light-dependent reactions of photosynthesis?
ATP & NADH
CO2 & H2O
NADPH & ATP
Organic Compounds & O2
- 12. Multiple Choice
What is the function of the electron transport chain between Photosystem II and Photosystem I?
establish electrochemical gradient of protons
to funnel electrons into photosystem I for the Calvin cycle
transport electrons to oxygen to make water
to synthesize ATP using ATP synthase
- 13. Multiple Choice
Where does the Calvin cycle take place?
thylakoid membrane
cristae
stroma
matrix
- 14. Multiple Choice
Where does the electron transport chain take place?
chloroplasts
prokaryotic plasma membrane
mitochondria
all of the choices
- 15. Multiple Choice
Which of the following are electron carriers for the electron transport chain in cellular respiration?
NADPH
FADH2
NADH
NADH & FADH2
- 16. Multiple Choice
Which process releases energy in glucose to form ATP, NADH, and pyruvate?
Glycolysis
Oxidative Phosphorylation
Krebs Cycle
Fermentation
- 17. Multiple Choice
What is oxidation?
loss of electrons
loss of water
gain of electrons
gain of water
- 18. Multiple Choice
In the electron transport chain of cellular respiration, where is the electrochemical gradient of protons generated?
cytosol
cristae
matrix
intermembrane space
- 19. Multiple Choice
Which process does NOT require oxygen?
Glycolysis
Oxidative Phosphorylation
Krebs Cycle
Aerobic respiration
- 20. Multiple Choice
Describe the pathway of electrons in the light reactions.
H2O → PSI → ETC → PSII → NADPH
H2O → PSII → ETC → PSI → NADPH
H2O → PSII → ETC → PSI → NADH
H2O → PSI → ETC → PSII → NADH
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