Which of the following accounts for the higher energy density of a fatty acid compared with the other energy-yielding nutrients?
a. Fatty acids have a lower percentage of hydrogen-carbon bonds
b. Fatty acids have a greater percentage of hydrogen-carbon bonds
c. Other energy-yielding nutrients have a lower percentage of oxygen-carbon bonds
d. Other energy-yielding nutrients undergo fewer metabolic reactions, thereby lowering the energy yield
Question 2
Your uncle Carlos has survived two heart attacks, and recently asked if he might be deficient in selenium, which he had just heard is essential to heart health. You are aware of his food habits and explain that his condition could not be the result of a dietary deficiency of selenium because
a. tap water is a source of selenium.
b. selenium is prevalent in most food groups.
c. he consumes legumes, a rich source of selenium.
d. he drinks fluoridated water, which increases bioavailability of selenium.
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