Calcium ions serve as second messengers.
a. true
b. false
a. true
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Most causes of speciation are relatively slow, in that they may take many generations to see changes, with the exception of _____
A) polyploidy B) reinforcement C) colonization D) natural selection
People who are intoxicated cannot coordinate their movements or walk a straight line because alcohol disrupts the normal function of which region of the brain?
A) cerebellum B) cerebrum C) corpus callosum D) hypothalamus E) thalamus
The mammalian trachea and esophagus both connect to the _____
A) stomach B) pharynx C) rectum D) epiglottis
Which is a description of pharmacokinetics?
a. Type of ionizing radiation b. Study of the distribution and removal of drugs in the body c. method of giving x-ray treatment d. use of drugs to increase the sensitivity of tumors to x-rays e. abnormal growth of cells