____________________ matter consists predominantly of densely packaged cell bodies and dendrites, whereas ____________________ matter consists of bundles of myelinated nerve fibers
Fill in the blank(s) with correct word
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Enzymes are biological catalysts that are crucial for normal human metabolism
Indicate whether this statement is true or false.
For most individuals the main source of vitamin D is dietary intake of milk
Indicate whether this statement is true or false.
Which layer of tissue is the endometrium?
A) inner B) middle C) outer D) between the outer and the peritoneum
Match each vitamin or mineral with its function in the body.
a. vitamin A b. vitamin B12 (cyanocobalamin) c. vitamin B3 (niacin) d. vitamin D (calciferol) e. calcium f. iron g. iodine h. phosphorous i. vitamin E j. vitamin B6 k. vitamin C l. vitamin K m. sodium n. chlorine 1. _____ A vitamin that helps enzymes in the citric acid cycle 2. _____ A mineral that is important in the structure of RNA, DNA, and ATP 3. _____ A mineral that is necessary for the production of blood 4. _____ A vitamin that is important in the production of blood 5. _____ A vitamin that is important in the production of visual pigment 6. _____ A mineral that is important in bone formation 7. _____ A mineral that is important in the production of thyroid hormones 8. _____ A vitamin that aids in the absorption of calcium 9. _____ A vitamin that helps in the manufacture of collagen fibers 10. _____ A mineral that helps in muscle and nerve function and in fluid balance 11. _____ A vitamin that acts as an antioxidant that prevents free-radicals from damaging the cell 12. _____ A vitamin that helps in blood clotting 13. _____ A mineral that helps in stomach acid production and in acid-base balance 14. _____ A vitamin that helps enzymes that catabolize amino acids