Xeropthalmia, a condition of dryness of the eye caused by damage to the eye tissue, is a sign of vitamin A deficiency disorder (VADD). An earlier sign of VADD is
A. hair loss.
B. night blindness.
C. anemia.
B
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How many minutes of physical activity is recommended daily for women at risk of preeclampsia?
A. 15 B. 30 C. 60 D. 90 E. 45
If the carbohydrate content of the diet is insufficient to meet the body's needs for glucose, which of the following can be converted to glucose?
A. Fatty acids B. Urea C. Ketones D. Amino acids
Calcium ions couple excitation of skeletal muscle fiber to contraction of the fiber. Where are calcium ions stored within the fiber?
A. Calcium ions are stored in the sarcoplasmic reticulum. B. Calcium ions are stored in the transverse tubules. C. Calcium ions are stored in the mitochondria. D. Calcium ions are stored in the nuclei.
The pregnant woman's body helps to conserve iron by
A. triggering food cravings B. reducing physical activity C. increasing iron excretion D. increasing iron absorption