To test someone's glomerular filtration rate, the individual is injected with the polysaccharide ________.
Fill in the blank(s) with the appropriate word(s).
inulin
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In the salamander, the sour taste receptor cells function by having an apically localized K+ channel that is blocked by protons. When protons are applied, what happens to the membrane potential and why?
A) Receptor depolarization because K+ permeability, which normally maintains a hyperpolarized resting state is reduced. B) Receptor hyperpolarization because H+ ions move into the cell and render it more positively charged. C) Receptor hyperpolarization because the H+ ions outside the cell make the inside of the cell more negatively charged. D) Nothing will happen until the G-protein is activated.
Which of the following structures contributes the most to the total refractive ability of the eye?
a. lens. b. cornea. c. ciliary muscle. d. retina. e. iris.
On average, how many hours does a cow spending ruminating every day?
Starch is the stored carbohydrate in plants, while ________ is the stored carbohydrate in animals.
Fill in the blank(s) with the appropriate word(s).