A solution with a pH of 9.0 would:
a. be an acid solution
b. have fewer hydrogen ions than hydroxide ions
c. be neutral
d. have more hydrogen ions than hydroxide ions
b. have fewer hydrogen ions than hydroxide ions
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Which of the following are the large output neurons of the cerebrum?
A. Oligodendrocytes B. Pyramidal cells C. Stellate cells D. Satellite cells
The axial skeleton includes ________.
A. the skull, the associated bones, and the vertebral column B. the skull, the vertebral column, the associated bones, and the thoracic cage C. the skull and the vertebral column D. the skull, the vertebral column, and the thoracic cage
When a catecholamine or peptide hormone binds to receptors on the surface of a cell,
A) a second messenger appears in the cytoplasm. B) the cell becomes inactive. C) the hormone is transported to the nucleus where it alters the activity of DNA. D) the cell membrane becomes less permeable. E) None of the answers are correct.
Which of the following statements concerning vitamin D is incorrect? Vitamin D
a. can be synthesized by the skin on exposure to sunlight. b. must be modified by biochemical alterations within the liver and kidneys before it is biologically active. c. enhances the effect of calcitonin on bone. d. increases Ca2+ absorption in the intestine. e. deficiency in children results in rickets.