Compared to membrane carriers, how much faster are channels at allowing particles/ions to pass through the plasma membrane?
a. 2x
b. 10x
c. 25x
d. 100x
e. 1,000x
e
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Which of the following hormones controls the release of anterior pituitary gonadotropins?
A) LH B) FSH C) GnRH D) testosterone
A placebo is
A) any drug being tested in a clinical trial. B) a hole in a cavity wall through which an organ protrudes. C) a drug or treatment that is expected to have no pharmacological effect. D) a nutritive and respiratory organ in fetal development. E) any drug in a class of drugs commonly used as pain relievers.
The total white blood cell count ranges from ________ to ________ /mm3 of blood
A) 500, 2000 B) 7200, 16,000 C) 2400, 5000 D) 4800, 10,800
What are the two major divisions of the nervous system?
A. Sensory and motor B. Parasympathetic and sympathetic C. Afferent and efferent D. Central and peripheral