| Answer | Crossword Clue |
|---|---|
| PROLINE | Amino acid found in collagen |
| GLYCINE | Amino acid found in protein |
| GLYCINE | Amino acid found in sugar cane |
| SERINE | Amino acid in proteins |
| SERINE | Amino acid in many proteins |
| CYSTINE | Amino acid in hair and skin |
| DOPA | Amino acid formed in the liver |
