Why are people with iron overload at increased risk for infections?
a. Excess tissue iron destroys vitamin C
b. Iron-rich blood favors growth of bacteria
c. Iron-rich blood impairs the immune system
d. Excess tissue iron interferes with antibiotic function
e. Iron binds with cells that produce T- and NK-cells, decreasing their production.
ANS: B
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A substance that includes a phosphorus atom in its structure is called a
A. Phospholipid B. Sterol C. Triglyceride D. Fatty acid E. Lipid
Which trace mineral is a cofactor involved in the formation of urea and assists in the formation of bone and cartilage?
A) manganese B) iodine C) calcium D) sodium
Current recommendations suggest that no more than _____ percent of calories be derived from saturated fat
a. 1 b. 3 c. 5 d. 8 e. 10
All of the following are recommendations for feeding infants EXCEPT:
1.exclusive breastfeeding for the first 6 months of life and continuing throughout the first year alongside other foods is best. 2.at 8 months, solid foods should be introduced. 3.breast-fed infants receiving little sun exposure should be given a vitamin D supplement. 4.in infants, the first food should be iron fortified, such as iron-fortified cereal.