21. The ion channel that opens in response to acetylcholine is an example of a ______ signal transduction system.
(A) G protein
(B) Ligand-gated
(C) Receptor-enzyme
(D) Serpentine receptor
(E) Voltage-gated

70. The ion channel that opens in response to acetylcholine is an example of a ________ signal transduction system. (A) G-protein (B) ligand-gated (C) receptor-enzyme (D) serpentine receptor (E) voltage-gated

19. The ion channel that opens in response to acetylcholine is an example of a ____________ signal transduction system. (A) G protein (B) ligand-gated (C) receptor-enzyme (D) serpentine receptor (E) voltage-gated

5. The ion channel that opens in response to acetylcholine is an example of a _________signal transduction system.(A) G protein (B) ligand-gated (C) receptor-enzyme (D) serpentine receptor (E) voltage-gated

5. The ion channel that opens in response to acetylcholine is an example of a_____signal transduction system.(A)G protein (B) ligand-gated (C) receptor-enzyme(D) serpentine receptor (E) voltage-gated

14. The ion channel that opens in response to acetylcholine is an example of a ____________ signal transduction system. (A) G protein (B) ligand-gated (C) receptor-enzyme (D) serpentine receptor (E) voltage-gated

22. When a cell with the pentose phosphate pathway has a need for more pentose phosphates, but not for additional NADPH: (A) Glucose-6-phosphate dehydrogenase is activated. (B) The oxidative and non-oxidative enzymes of the pentose phosphate pathway are active. (C) The non-oxidative enzymes produce pentose phosphates from fructose-6-phosphate and glyceraldehyde-3-phosphate. (D) All enzymes of glycolysis and the pentose phosphate pathway are active. (E) None of the above is true.

23. Sudden infant death syndrome has been linked in some cases to a deficiency in medium-chain acyl-CoA dehydrogenase. Which metabolic profile would you expect in a patient with this deficiency during a period of fasting? (A) Hyperglycemia and high levels of ketone bodies. (B) Hypoglycemia and high levels of ketone bodies. (C) Hypoglycemia and low levels of ketone bodies. (D) High levels of Malonyl-CoA and increased fatty acid synthesis. (E) Accumulation of Propionyl-CoA and metabolic alkalosis.

24. What biomolecule makes up Valine's side chain? (A) Pyruvate (B) Acetyl-CoA (C) Biotin (D) Glutamate (E) Glycine

25. The PCR reaction components do      NOT      include: (A) All four deoxynucleoside triphosphates. (B) DNA template containing the sequence to be amplified. (C) Heat-stable DNA polymerase. (D) DNA ligase. (E) Oligonucleotide primer(s).

26. Glucose labeled with in C-3 and C-4 is completely converted to acetyl-CoA via glycolysis and the pyruvate dehydrogenase complex. What percentage of the acetyl-CoA molecules formed will be labeled with , and in which position of the acetyl moiety will the  label be found? (A) 100% ofthe acetyl-CoA will be labeled at C-1 (carboxyl). (B) 100% of the acetyl-CoA will be labeled at C-2. (C) 50% of the acetyl-CoA will be labeled, all at C-2 (methyl). (D) No label will be found in the acetyl-CoA molecules. (E) Not enough information is given to answer this question.

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