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Proteins are polymers. The monomer of ANY protein is always an <em><u>amino acid. </u></em>
<h2>Amino Acids</h2>
Amino acids have a central atom of Carbon, which is covalently bonded with an amine group (NH2), Hydrogen, Carboxyl group (COOH), and the R-Group, which there are 20 kinds and form 20 various kinds of Amino acids.
1. Filament
2. Anther
3. Petal
4. Stigma
5. Style
6. Ovary
7. Sepals
8. Stem
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