Why is it important that the human body have buffers?
Normal physiological function depends on the body's ability to maintain its normal pH. To accomplish this, the body has built-in buffering systems designed to prevent changes in pH. A buffer can react with both acids and bases to maintain a constant pH.
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Liana is a four year old and suffering from diarrhea. Her mother should allow her to eat which of the following to thicken her stool?
a. Applesauce b. Milk c. Grape juice d. Green beans
Drew, Steven, Jen, and Lina are all college friends who are shopping at the local discount store. As they walk through the pharmacy department they notice the free automated blood pressure machine. For fun they all decide to take their blood pressure to see what their readings are. Drew's reading was 122/88 mm Hg, Steven's reading was 132/92 mm Hg, Jen's reading was 110/70 mm Hg, and Lina's
reading was 100/60 mm Hg. While in the pharmacy section they also look through the vast array of supplements available. Jen has a family history of osteoporosis and is of Asian descent. She has a small bone frame and is also lactose intolerant. She looks at the calcium supplements but isn't sure what to buy. In the past Lina has been diagnosed as having iron-deficiency anemia and is currently not taking any dietary supplements. She shops in the iron supplement section but is also confused on what to buy. Drew and Steven decide to purchase a large bottle of multi-vitamin/multi-mineral supplements to share. Neither Drew nor Steven consistently consumes vegetables or fruits, and they think that taking a supplement would be good for their health. Lina is no longer anemic but wants to avoid being so in the future. What should she do? A) Purchase the most expensive iron supplement available, because it is the most likely to be of the best quality. B) Purchase a multi-vitamin with iron. C) Continue to consume adequate iron in her diet by including whole and enriched grain products and lean red meat and fish. D) Purchase the least expensive iron supplement to keep on hand just in case she feels tired.
In the notation 3 C6H12O6, what does the "three" indicate?
a. The number of atoms contained in the molecule b. The number of different atoms contained in the molecule c. The number of molecules present d. The number of different molecules present
One physiologic factor associated with weight gain is a high rate of:
a. basal metabolism. b. carbohydrate oxidation. c. fat oxidation. d. protein oxidation.