Science quiz
Amino acids: essential or nonessential?
Nine amino acids must come from food and eleven can be made by the body. An amino acid appears and you click its kind.
- Format
- Sort into groups
- Items
- 20 to sort
- Limit
- 1:20
- Level
- Hard
- Checked
- 2026.10.03
- Items
- 20
- Groups
- 2
- Time limit
- 1:20
- A miss
- Shows the answer, then moves on
- Each amino acid appears in turn. Click its kind, or press its number.
- The groups never move, so the number keys are quick.
- Skip (0) sends a prompt to the back of the queue.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Click whether each amino acid is essential or nonessential. The groups appear when you start.
About this quiz
A sorting round built on the list behind Ribbia's The 20 amino acids: essential and nonessential quiz: 20 entries in 2 groups. A miss never passes in silence: the right group is shown before the next entry.
- Nine of the twenty are essential.
- Press 1 for essential and 2 for nonessential.
Sources
- [1]MedlinePlus, U.S. National Library of Medicine. Amino acids.
Last checked October 3, 2026
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