Exposure to sarin, a potent nerve gas, results in muscle paralysis. Therefore, sarin must interfere with which neurotransmitter?
A) serotonin
B) GABA
C) dopamine
D) enkephalins
E) glutamate
C) dopamine
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Cellular division within the eukaryotic cells requires DNA to condense into the:
A. 30-nm chromatin fiber. B. 1400-nm chromatin fiber. C. 300-nm chromatin fiber. D. 2-nm chromatin fiber. E. 44-nm chromatin fiber.
If solution A has a lower pH compared to solution B, then solution A is more acidic than solution B.
Answer the following statement true (T) or false (F)
An element is defined as a substance that:a
is composed of more than one kind of atom. b. is held together by covalent bonds. c. cannot be broken into simpler substances by chemical reactions. d. cannot burn. e. is soluble in both acid and base.
Simple epithelial cells of the renal tubule have abundant ____ to increase the surface area for reabsorption and
numerous ____ to provide energy for actively transporting materials. a. microvilli; mitochondria b. cilia; mitochondria c. microvilli; Golgi complexes d. cilia; Golgi complexes e. cilia; capillaries