811. The three identical b subunits of the F1, complex during ATP synthesis have
A. different affinities for ATP but not for ADP
B. different affinities for ADP but not for ATP
C. different affinities for ATP and for ADP
D. similar affinities for ADP and ATP

812. Where the acyl-CoA formed in the cytosol is transported for oxidation?
A. Mitochondrial matrix
B. Microsomes
C. Endoplasmic reticulum
D. Remains in cytosol

813. The transport of acyl-CoA for oxidation using a shuttle involves formation of the intermediate
A. 3 acetyl-CoA
B. Acyl-coenzyme A
C. acyl-carnitine
D. None of these

814. FAD is reduced to FADH2 during
A. electron transport phosphorylation
B. lactate fermentation
C. Krebs cycle
D. glycolysis

815. During glycolysis, electrons removed from glucose are passed to
C. acetyl CoA
D. pyruvic acid

816. A biological redox reaction always involves
A. an oxidizing agent
B. a gain of electrons
C. a reducing agent
D. all of these

817. Coenzyme Q is involved in electron transport as
A. directly to O2
B. a water-soluble electron donor
C. covalently attached cytochrome cofactor
D. a lipid-soluble electron carrier

818. The carbon dioxide is primary a product of
A. Krebs cycle
B. glycolysis
C. electron transport phosphorylation.
D. lactate fermentation.

819. Which of the following is not a feature of oxidative phosphorylation?
A. Direct transfer of phosphate from a substrate molecule to ADP
B. An electrochemical gradient across the inner mitochondrial membrane
C. A membrane bound ATP synthase
D. A protonmotive force

820. Which of the following is not a significant biological oxidizing agent?
B. Fe3+
C. O2