Multiple choice

Match the following amino acids with their metabolic precursors and select the correct option.

 
Amino acid Metabolic precursor
A. Alanine 1. α-ketoglutarate
B. Glutamine 2. Pyruvate
C. Histidine 3. 3-phosphoglycerate
D. Serine 4. Ribose 5-phosphate

  1. A - 4, B - 3, C - 2, D - 1

  2. A - 2, B - 1, C - 3, D - 4

  3. A - 2, B - 1, C - 4, D - 3

  4. A - 3, B - 2, C - 4, D - 1

  5. A - 1, B - 2, C - 3, D - 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Alanine is most commonly produced by reductive amination of pyruvate. α-ketoglutarate (also known as oxoglutarate) is a precursor to glutamine. Ribose 5-phosphate is a key precursor to histidine. Glycerate 3-phosphate is a precursor to serine.

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