24. Which of the following is not an intermediate of the citric acid cycle?(A)Acetyl-coA(B)Citrate(C)Oxaloacetate(D)Succinyl-coA(E) a-Ketoglutarate

7.The isoelectronic point of an amino acid is the point where (A)the pKa of the a-carboxylic acid is the same as the pK, of the a-amino group. (B)the a-carboxylic acid is protonated and the a-amino group is unprotonated. (C)the solubility of the amino acid is maximized. (D)the a-carboxylic acid and the a-amino group are both half protonated.(E)the amino acid carries no net electrical charge.

24. Which of the following is not an intermediate of the citric acid cycle?
(A)Acetyl-coA
(B)Citrate
(C)Oxaloacetate
(D)Succinyl-coA

(E) a-Ketoglutarate

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