Use the Following Figure to Answer the Questions Below

question 79

Multiple Choice

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