When body cells need more iron, the number of transferrin receptors on the cell surface

A. decreases.
B. remains unchanged.
C. increases.


Answer: C

Nutritional Science

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Which answer best describes the function of sterols??

A) Tissue repair B) Medium for metabolism C) Preferred and fastest energy source D) Enzyme cofactor E) Synthesis of sex hormones

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People with _____ often complain of food "sticking" in the esophagus

a. esophageal dysphagia b. oropharyngeal dysphagia c. dyspepsia d. gastritis e. Sjögren's syndrome

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Lena's 4-year-old son isn't feeling well. He lacks much interest in playing, he's lost weight, his breath has a strange odor, and he seems to be thirsty all the time. Based on this information, Lena should

A. have her son tested for metabolic syndrome. B. increase her son's intake of phenylalanine. C. decrease her son's intake of dietary fiber. D. have her son tested for type 1 diabetes.

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Bile salts are synthesized from cholesterol in the ____.?

A) ?canaliculi B) ?common bile duct C) ?hepatocytes D) ?gallbladder

Nutritional Science