Vitamin D can be produced by the ____________________ upon exposure to sunlight
Fill in the blank(s) with correct word
skin
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The process of sensation begins in a _____, which can be either a primary sensory neuron or a separate cell
a) sensory receptor cell. b) signal transducer cell. c) secondary sensory neuron. d) effector cell. e) association neuron.
The term metabolism is best defined as ________.
A) the length of time it takes to digest and absorb fats B) a measure of carbohydrate utilization, typically involving measurement of calories C) the number of calories it takes to keep from shivering on a cold day D) biochemical reactions involved in building cell molecules or breaking down molecules for energy
What structure contains the receptor cells for hearing?
What will be an ideal response?
About 90 percent of the cells in the CNS are ____________________ cells
Fill in the blank(s) with correct word