Vitamins

1. Fat-soluble vitamin that functions as an antioxidant
4. Main form of vitamin A in the body
5. Vitamins are _____ nutrients, containing carbon and derived from living things
7. Water-soluble vitamin that functions as an antioxidant and is needed for maintenance of connective tissues; heat and oxygen destroy it
9. Inactive forms of vitamins; must be activated to be used by the body
12. Deficiencies of vitamin D may cause softened _____ and teeth
13. B vitamin that helps to prevent neural tube defects; needed before and during pregnancy
16. Sometimes called the "sunshine vitamin" because the body can make it with the help of sunlight
18. Deficiency of this vitamin causes beriberi; also called vitamin B1
19. Too much of this B vitamin can lead to painful flush, rash and hives
20. Along with adipose or fatty tissue, this organ stores some fat-soluble vitamins

2. Substance produced by stomach that is needed for absorption of vitamin B12; pernicious anemia may result if too little is produced
3. Excesses of water-soluble vitamins tend to be excreted in this substance produced by the kidney
6. All active forms of vitamin B6 have this 7-letter word root as part of their names
8. The B vitamins function as _____, substances that activate enzymes and help them function
10. Vitamin B2; needed for energy metabolism
11. Precursor to vitamin A found in many plant-based foods, particularly those that are bright orange and dark green
14. Fat-soluble vitamins are first absorbed into this body fluid and then into blood
15. Some intestinal bacteria produce this vitamin, also known as vitamin B7
17. Bacteria in the large intestine make this fat-soluble vitamin that is essential for blood clotting