Two nutrients that can best boost the immune system are:
a. vitamins A and B12.
b. vitamin C and zinc.
c. iron and selenium.
d. iodine and copper.
b
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Which item is a nonessential amino acid in human nutrition?
a. Proline b. Threonine c. Methionine d. Tryptophan e. Phenylalanine
An omega-3 fatty acid has its first double bond on the
a. third carbon from the acid end. b. first 3 carbons from the acid end. c. third carbon from the methyl end. d. first 3 carbons from the methyl end.
Farmers use genetically modified plants to ___.
A. reduce use of fossil fuels B. reduce soil erosion C. produce disease-resistant crops D. reduce food allergens
What occurs with the amino acid disorder homocystinuria?
a. cysteine is unable to be converted to homocysteine b. homocysteine is unable to be converted to cysteine c. homocysteine is unable to be converted to lysine d. homocysteine is unable to be converted to leucine e. cysteine is unable to be converted to leucine