Antioxidant vitamins
a) Are found in plasma membranes
b) Are vitamin derivatives
c) Can inactivate oxygen free radicals
d) Are all excreted in feces
e) Are all stored in adipose cells
c
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Phalanges are
A. finger and toe bones. B. forearm bones. C. wrist and ankle bones. D. skull bones.
Vasopressin, or antidiuretic hormone, is secreted from the posterior pituitary in response to input from hypothalamic osmoreceptors which were activated by
a. increased levels of osmium in the blood. b. softening of the cervical os (the outlet of the uterus). c. increased plasma osmolarity. d. increased blood volume. e. increased blood pressure.
During normal viewing of a distant object, the:
A. firing of parasympathetic nerves to ciliary muscles increases. B. zonular fibers are slackened. C. lens flattens. D. light rays striking the eyes are diverged by the cornea. E. ciliary muscles are contracted.
Salt was added to a beaker of distilled water (the water was not stirred). A sample taken from the bottom of the beaker was found to be 20% salt
At the same time, a sample taken from the top of the beaker was found to be 2% salt. After 24 hours A. the difference in the percentage of salt between the top and bottom samples would increase. B. the percentage of salt in top and bottom samples would be approximately equal. C. the samples would still be 2% and 20% respectively. D. the salt would float to the top. E. None of these choices are correct.