The hemoglobin molecule:
A. carries oxygen from the lungs to the tissues.
B. contains 4 heme compounds.
C. decreases during iron deficiency anemia.
D. All of these choices are accurate.
Answer: D
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Which of the following substances is a contaminant mineral?
a. Nickel b. Copper c. Lead d. Bromine e. Boron
Vitamin E protects cell membranes by donating electrons, thereby stabilizing free radicals that damage the fatty acids in phospholipid bilayers
Indicate whether the statement is true or false
Amino acid supplements should be used with caution for all of the following reasons EXCEPT:
a. their effectiveness is not guaranteed. b. their purity is not guaranteed. c. the evidence from long-term safety studies. d. the dose provided by each pill is not guaranteed.
________ is a building block of vitamin D and other hormones.
A. Estrogen B. Cholesterol C. Hydroxyapatite D. Calcitriol