What is the reason why we must breathe oxygen?
Oxygen is broken down to yield energy.
Oxygen allows us to get more energy (in the form of ATP) out of the food molecules we break down for energy.
Oxygen stimulates enzyme activity.
Oxygen is the chemical detected by chemoreceptors that keeps us breathing.
Oxygen allows us to get more energy (in the form of ATP) out of the food molecules we break down for energy.
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The Atkins and South Beach diets are considered ketogenic because
A) they have the potential to increase the body's pH. B) they require people to eat large quantities of ketones. C) they cause the body to burn calories from non-carbohydrate sources. D) Type I diabetics use them. E) they shift one's metabolism to increased levels of glycolysis.
Which white blood cells are phagocytes?
a. monocytes b. T lymphocytes c. B lymphocytes d. all of the above
The ________ vein is formed by the fusion of the greater saphenous vein, femoral vein, and deep femoral vein
A) internal iliac B) external iliac C) common iliac D) inferior vena cava E) azygos
The enzyme(s) called ________ break(s) down the substrate called ________
A) nucleases; nucleotides B) lactose; lactase C) peptidases; proteins D) lipases; micelles E) lactase; glucose