All of the following are true regarding zinc EXCEPT:
a. plant foods are a good source.
b. supplements may decrease the duration and severity of the common cold.
c. deficiency results in growth failure.
d. it is a component of insulin and many enzymes.
a
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Which blood vessel is responsible for returning blood to the heart from the liver?
A) hepatic artery B) hepatic vein C) GI tract vein D) portal vein
Which form of vitamin A is involved in the regulation of gene expression?
a. retinoic acid b. retinol c. retinal d. retinol-binding protein e. retinolic acid
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Most foods that are high in calcium are poor sources of iron. This statement illustrates the importance of the characteristic of a nutritious diet known as: a. adequacy
b. calorie control. c. moderation. d. balance. e. variety.