Parkinson's disease is caused by destruction of cells in the
a. hypothalamus.
b. pineal body.
c. corpus callosum.
d. basal nuclei of the thalamus.
e. corpora quadrigemina.
D
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Which of the following affects the osmolarity of a solution? I) concentration of cations II) concentration of anions III) concentration of water
Which of the following affects the osmolarity of a solution? I) concentration of cations II) concentration of anions III) concentration of water A) only I B) only III C) only I and II D) only II and III E) I, II and III
The taxon shown here with the greatest number of
named species is a. vertebrates. b. insects. c. mollusks. d. plants. e. fungi.
During the Pleistocene epoch, plant communities changed dynamically in response to:
a. a meteor impact. b. intense grazing pressure. c. competition with gymnosperms. d. iridium in the soil. e. fluctuating climates (ice ages).
Uncommonly large feet, hands, chin, nose, and eyebrow ridges on a normal-sized body are characteristic of the condition ________, that is caused by ________.
A. Cushing's syndrome; adrenal cortex hormones B. Addison's disease; atrial natriuretic hormone C. pituitary dwarfism; hyposecretion of growth hormone in children D. acromegaly; overproduction of growth hormone in adults E. gigantism; overproduction of growth hormone in children