5. In the biochemical reaction, ATP→ADP + Pi is an example of a(n) ______ reaction.
(A) group transfer.
(B) internal rearrangement.
(C) free radical.
(D) homolytic cleavage.
(E) oxidation/reduction.

6. A monoclonal antibody differs from a polyclonal antibody in that monoclonal antibodies: (A) are labeled with chemicals that can be visualized. (B) are produced by cells from the same organism that produced the antigen. (C) are synthesized by a population of identical, or "cloned," cells. (D) are synthesized only in living organisms. (E) have only a single polypeptide chain that can recognize an antigen.

7. Consider the reaction below, which of the following statement is false? (A) Citric acid cycle is the central pathway of metabolism of the cell because its intermediates are commonly used by other metabolic reactions. (B) Citric acid cycle takes place in mitochondria matrix. (C) Citric acid cycle is amphibolic because it plays a role in both catabolism and anabolism. (D) Three NADH, 1 FADH2 and 1 GTP are generated in each cycle. (E) None of above is false.

8. A deficiency in which of the following within the mitochondrial matrix will not limit a cell's rate of oxidative phosphorylation? (A) NAD+. (B) NADH. (C) O2. (D) FADH2. (E) A deficiency in any of these will limit the rate of oxidative phosphorylation.

9. If the enthalpy change for a reaction is zero, AGº is equal to which of the following? (A)(B)(C) -ΔΗ°. (D) TΔS°. (E) -TΔS°.

10. Which lipid is not a signal messenger? (A) Phosphatidylinositol. (B) Estradiol. (C) Sphingolipid. (D) Vitamin K. (E) Eicosanoid.

11. Which lipid is wildly used in apoptosis detection? (A) Phosphatidylglycerol. (B) Phosphatidylethanolamine. (C) Sphingomyelin. (D) Phosphatidylcholine. (E) Phosphatidylserine.

12. Which one is an ω-6 fatty acid? (A) EPA (B) DHA (C) Arachidonic acid (D) α-Linolenic acid (E) Tetracosahexaenoic

13. Which fatty acid is not oxidized with β oxidation? (A) Palmitic acid (16:0). (B) Linoleic acid (18:2()). (C) Phytanic acid. (D) Eicosapentaenoic acid (20:5()). (E) Long chain odd number lipid.

14. Hexokinase and glucokinase belong to the kinase subclass of what class of enzymes? (A) Oxidoreductase. (B) Isomerase. (C) Transferase. (D) Hydrolase. (E) Lyase.

15. The metabolic function of the pentose phosphate pathway is to: (A) act as a source of ADP biosynthesis. (B) generate NADPH and pentoses for the biosynthesis of fatty acids and nucleic acids. (C) participate in oxidation-reduction reactions during the formation of H2O. (D) provide intermediates for the citric acid cycle. (E) synthesize phosphorus pentoxide.

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