Why do athletes' muscles need to be trained in order to burn fat most efficiently?
Most people's muscles will begin to use fats from the bloodstream after 20 minutes of activity. At this point, the stored glycogen levels may be reduced. Studies have shown that muscles will use fatty acids more efficiently when they are trained. The levels of enzymes that break down fats are higher in trained muscles than in untrained muscles. Aerobic athletes have a stronger heart and lungs that can deliver more oxygen to the muscles. This allows them to break down fats aerobically to produce more energy.
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A. beta-oxidation B. glycolysis C. gluconeogenesis D. lipogenesis
Which of the following drugs can most affect nutrition in the older adult?
a. aspirin b. alcohol c. antacids d. acetaminophen (Tylenol)
Which amino acid is affected in the metabolic condition maple syrup urine disease?
A. methionine B. serine C. isoleucine D. phenylalanine E. cysteine
What substance protects the stomach lining from damage due to digestive juices?
a. Water b. Mucus c. Pepsinogen d. Dietary fats e. Gastrin