__________ blocks acetylcholine receptors

What do we call the midpoint of a frequency distribution?

a. mode b. norm c. mean d. median

Research on taste shows that ________

a. the taste receptor cells are replaced by new cells about every 40 days. b. the tongue is divided into sections, each of which is sensitive to a particular basic taste. c. people who are above 40 years of age have fewer taste buds than those who are younger. d. the highest concentration of taste buds is found in the center of the tongue.