During periods of starvation, the carbon skeletons of amino acids are used for energy and for gluconeogenesis
Indicate whether the statement is true or false
TRUE
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Foods such as potato chips, candy, and colas are called empty-kcalorie foods because they _____
a. are inexpensive b. are lacking in calories c. are low in nutrient density d. should be eaten in moderation e. are mostly vitamins and minerals
The process of producing glucose from noncarbohydrate sources is called
A. glycolysis. B. gluconeogenesis. C. glycogenolysis. D. lipolysis.
Answer the following questions true (T) or false (F)
1. Preformed niacin is found in meat, fish, poultry, enriched whole-grain breads and bread products, and fortified cereals. 2. Panthothenic acid, which is abundant in whole-grain cereals, nuts and legumes, milk, meat, and eggs, has no known toxicity symptoms, and deficiency symptoms are rare. 3. Biotin, found in peanuts, yeast, egg yolks, grains, fish, and liver, is referred to as the "beauty vitamin," because it helps maintain healthy hair and nails.
Why does fructose not appear in the blood after absorption?
a. Used immediately by the intestinal cells for energy b. Transported via the lymphatic system and taken up by cells immediately c. Immediately trapped by the liver and converted to glucose d. All of the above