If an adult consumes 1,000 mg of calcium daily, what is the estimated average amount absorbed from the intestinal tract?
a. 800 mg
b. 600 mg
c. 500 mg
d. 300 mg
d
You might also like to view...
Which part of the nephron is involved in reabsorption of sodium ions and water, and secretion of potassium and hydrogen ions?
A. Bowman's capsule and loop of Henle B. distal tubule and collecting duct C. proximal tubule and loop of Henle D. efferent tubule and afferent tubule E. afferent tubule and collecting duct
Foods such as turnips, cabbage, cauliflower, and broccoli contain ________ that inhibit iodide metabolism by the thyroid gland.
A. goitrogens B. metalloenzymes C. iodinase D. pica
Dietary cholecalciferol must be further hydroxylated in order to be active vitamin D. The first hydroxylation occurs in the ____ to produce ____.?
A) ?liver; 25-hydroxycholecalciferol B) ?kidney; 25-hydroxycholecalciferol C) ?skin; 7-dehydrocholesterol D) ?kidney; 1-hydrocholesterol
What is the percent of kcalories from fat for a cookie that contains 10 grams of fat and 150 kcalories??
A) ?90 percent B) ?72.3 percent C) ?60 percent D) ?52.8 percent