Which of the following is (are) essential fatty acids

that are not produced by the human digestive
system?
a. linoleic
b. vitamin Z
c. vitamin E
d. alpha-linolenic acid
e. two of these are correct


Answer: e

Biology & Microbiology

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a. receptor tyrosine kinases b. hormone receptors c. guanylyl cyclase d. ligand-gated ion channels e. G-protein-coupled receptors

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What will be an ideal response?

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All molecules required to support the body's chemical reactions are obtained from food and are called 

A. organic. B. vitamins. C. nutrients. D. carbohydrates.

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