Use the following figure to answer the questions below.

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 the figure above)?
A)succinate
B)malate
C)citrate
D)α-ketoglutarate
E)isocitrate

Question

Use the following figure to answer the questions below.
  
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 the figure above)?
A)succinate 
B)malate 
C)citrate 
D)α-ketoglutarate 
E)isocitrate

Quizplus · Accepted Answer

α-ketoglutarate is a five-carbon intermediate in the citric acid cycle and serves as a precursor for the synthesis of five-carbon amino acids such as glutamate.

Use the Following Figure to Answer the Questions Below