Energy drinks contain several components, including caffeine, that are advertised to boost your energy levels. If you drink several of these caffeine-containing energy drinks in a short period of time, you feel the sensation to urinate. Why?
What will be an ideal response?
Caffeine can function as a mild diuretic; that is, it increases the amount of water remaining to be excreted in the urine. This effect is the result of caffeine's ability to inhibit sodium reabsorption into the bloodstream. The active transport of sodium out of tubular cells is necessary to set up the driving force for movement of water out of the nephron and into blood.
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The primary hearing interpretation portion of the
brain is located a. at the rear of the brain. b. midway from front to back. c. in the “temple” area. d. behind the forehead. e. in the cerebellum.
Which gametes can a RrYy plant produce? Select one:
a. RrYy b. R or r c. RY or ry d. Rr or Yy e. RY, Ry, rY, or ry
Symbiotic association in which one partner benefits and the other is unaffected is called:a
symbiosis. b. mutualism. c. commensalism. d. parasitism. e. colonialism.
Hormones are usually transported through ________ and affect only cells with ________
A) ducts... specific receptors B) intercellular junctions... cell junctions C) blood vessels... specific receptors D) blood vessels... cell junctions