Vitamins

2. A non-protein chemical that assists with a biological chemical reaction.
4. A disease caused by lack of vitamin C (ascorbic acid).
7. A disorder that is caused by the deficiency of a vitamin.
8. A disease caused by lack of vitamin B-3 (niacin).
9. Any number of freely diffusing organic compounds that function as cofactors with enzymes in promoting a variety of metabolic reactions.
11. A condition in which the body cannot make enough healthy red blood cells because it does not have enough vitamin B12.
12. An enzymatically inactive protein part of an enzyme; requires a cofactor for its activity.
13. A disease caused by a lack of vitamin B1 (thiamine) in the body.
15. Minerals that are required in amounts measured in nanograms.
16. The estimated amount of a nutrient (or calories) per day considered necessary for the maintenance of good health by the Food and Nutrition Board of the National Research Council/National Academy of Sciences.

1. Minerals that are required in amounts measured in milligrams.
3. A condition of abnormally high storage levels of vitamins, which can lead to toxic symptoms.
5. Any disease caused by a lack of vitamins.
6. The state of the nutrition of the body.
7. The active forms of enzymes.
10. Substances that our bodies need to develop and function normally.
14. A nutrient required for normal physiological functions that cannot be synthesized in the body and thus must be obtained from a dietary source.