Across
- 2. a type of nutrient that you get from your diet
- 5. an atom, molecule, or ion that has an unpaired valence electron
- 7. main source of energy for the body
- 9. an essential micronutrient which an organism needs in small quantities
- 10. elements on the earth and in foods that our bodies need to develop
Down
- 1. an ion with a positively charged carbon atom
- 3. a molecule or ion capable of donating a proton
- 4. carbon bears a formal negative charge
- 6. comprised of one or more long chains of amino acid residues
- 8. compound added to a system to cause a chemical reaction