Taste buds
A. can perceive seven basic tastes.
B. are replaced approximately every 30 days.
C. can only perceive taste if the molecules are in solution.
D. can be found covering both the superior and inferior surfaces of the tongue.
E. have axons and generate their own action potentials.
C
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When potassium channels open and the ions diffuse through the membrane,
A) the inside of the membrane will become more positive. B) the inside of the membrane will become more negative. C) there will be almost no effect on transmembrane potential. D) the membrane will become depolarized. E) the membrane will depolarize to threshold.
The dermis is composed mostly of
A. loose connective tissue. B. dense irregular connective tissue. C. stratified squamous epithelium. D. pseudostratified columnar epithelium.
The movement of protein molecules within the phospholipid bilayer is described by the
A. cholesterol mosaic model. B. protein-lipid mosaic model. C. fluid mosaic model. D. lipid mosaic model.
A substance that causes a mutation is called a ________.
Fill in the blank(s) with the appropriate word(s).