Which of the following represents the order of the stages of iron deficiency?
a. Iron stores decline; iron transport diminishes; hemoglobin synthesis falls
b. Hemoglobin synthesis falls; iron transport diminishes; iron stores decline
c. Iron transport diminishes; hemoglobin synthesis falls; iron stores decline
d. Iron transport diminishes; iron stores decline; hemoglobin synthesis falls
a
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In the USDA "MyPyramid" of 2005, the narrowing of each food group from bottom to top represents
A. the idea that variety is necessary because no one food contains all of the nutrients necessary for health. B. the idea that moderation is required for a healthy lifestyle. C. the idea that a balanced diet includes foods from each of the food groups. D. the idea that the wider base represents foods with high solid fats, added sugars, and caloric sweeteners. E. the importance of daily exercise.
The latency stage of HIV disease can last from several weeks to _____ years.
A. 10 B. 20 C. 15 D. 25 E. 30
Phospholipids can help fats cross cell membranes because ____
a. they are so abundant in foods and widespread in the body b. they are fat soluble but not water soluble c. they have a large, multiple-ring structure d. they have water-soluble heads and fat-soluble tails e. their phosphorus components inhibit water from crossing the membranes
Indicate the safety and effectiveness of the supplements named. 500 mg of vitamin C to prevent colds
a. Safe and effective b. Safe but evidence lacking for effectiveness c. Not safe or effective