Problem:
Question 1: Mitochondrial DNA is/are
A) similar to nuclear DNA sequences. B) circular
C) information storage for enzymes associated with photorespiration.
D) associated with paternal inheritance patterns.
E) all of the above
Question 2: Which of the following is defined as "heat content"?
A) energy output
B) heat loss
C) entropy
D) solar radiation
E) enthalpy
Question 3: Which of the following is an endothermic, but exogonic process?
A) combustion reactions
B) adding a strong acid directly to water
C) dissolving sugar in water
D) ice melting
E) neutralization reactions of the addition of strong acid directly to a strong base
Question 4: All of the following may occur at the active site of an enzyme except
A) bond distortion.
B) proton transfer.
C) electron transfer.
D) intramolecular hydrogen bonding.
E) neutron transfer.
Question 5: The type of inhibitor that binds to the enzyme (E) but not to the enzyme-substrate (ES) complex is a(n) ________ inhibitor.
A) competitive
B) noncompetitive
C) uncompetitive
D) coenzyme
E) mixed-type
Question 6: Saturation can be defined as
A) denaturation of an enzyme.
B) the inability to increase reaction velocity beyond a finite upper limit.
C) inhibition of enzyme function by blocking the active site.
D) the substrate concentration at which velocity reaches one-half maximum velocity.
E) a characteristic of all uncatalyzed reactions.
Question 7: In the Eadie-Hofstee plot,
A) the x axis shows v.
B) the y intercept is Vmax.
C) the slope can be used to determine Km.
D) the y axis shows v/[S].
E) all of the above
Question 8: AZT, an antiviral drug that target the enzyme reverse transcriptase used in treatment for AIDS. It works by
A) competitive inhibition
B) noncompetitive inhibition
C) denaturaing the enzyme
D) increasing the efficiency of DNA synthesis by the virus
E) all of the above
Question 9: The ability of some organisms to compensate for temperature changes by altering the lipid composition of membrane lipids is known as
A) homeoviscous adaptation.
B) ectothermic adaptation.
C) kleptothermic adaptation.
D) A and B only
E) none of the above
Give reasoning with your answer.