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Practice problem

Amino Acids — Overview & Structure

By Hannah Bonville
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The image below shows the chemical structure of two amino acids - serine and tryptophan.

Serine and tryptophan are identical except for the part that is circled.

Image source: By Borb CC BY-SA 3.0 via Wikimedia Commons

Image source: By Borb CC BY-SA 3.0 via Wikimedia Commons

There is only one structure difference between serine and tryptophan. This difference is circled in yellow. What is this area of an amino acid called?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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