Why are skeletal muscle cells able to take up glucose without insulin during exercise?
a. Muscle contractions can activate movement of glucose transporters from the cytoplasm to the cell membrane.
b. The cell membranes of muscle cells contain glucose receptors.
c. Muscle cells can take up glucose without insulin.
d. Muscle cells do not depend on glucose transporters for uptake of glucose.
a
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Which statement accurately describes the pancreas?
a. The major hormone controlling the release of pancreatic enzymes is insulin. b. Quick dietary changes improve digestion because of pancreas inefficiency. c. The pancreas can increase the activity of fat-degrading enzymes in response to more fat in the diet. d. In general, the amounts of digestive enzymes secreted by the pancreas remain constant over a wide range of nutrient intakes. e. Pancreatic enzymes can digest protein and fat but not carbohydrate.
Which of the following micronutrients is often lacking in the diets of older adults?
A. Potassium B. Niacin C. Sodium D. Thiamin
Which mineral serves as the major intracellular fluid cation??
A) ?calcium B) ?chloride C) ?sodium D) ?potassium