Question 94

(Multiple Choice)

   Figure 9.2 The citric acid cycle. -Carbon skeletons for amino acid biosynthesis are supplied by intermediates of the citric acid cycle. Which intermediate would supply the carbon skeleton for synthesis of a five-carbon amino acid (see Figure 9.2)? A) succinate B) malate C) citrate D) α-ketoglutarate E) isocitrate
Figure 9.2 The citric acid cycle.
-Carbon skeletons for amino acid biosynthesis are supplied by intermediates of the citric acid cycle. Which intermediate would supply the carbon skeleton for synthesis of a five-carbon amino acid (see Figure 9.2)?


A) succinate
B) malate
C) citrate
D) α-ketoglutarate
E) isocitrate

Answer