A first aid for stingray injury is:
a. place the injured area in cold water or apply ice packs.
b. pour ammonia over the injured area.
c. place the injured area in hot water.
d. apply MSG to the injured area.
e. urinate onto the wound.
C
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A bacterial chromosome consists of a:
a. linear DNA molecule many times larger than the cell. b. circular DNA molecule many times larger than the cell. c. circular DNA molecule smaller than the cell. d. linear DNA molecule smaller than the cell. e. linear or circular DNA molecule smaller than the cell.
A solution is a mixture of
a. polar and nonpolar substances. b. protons and neutrons. c. unevenly distributed substances. d. evenly distributed substances.
In humans, assume red hair is recessive to dark hair. What are the chances of a dark-haired couple having a red-haired child if each had a red-haired parent?
a) 25% b) 0% c) 50% d) 75% e) 100%
Which microscope illuminates specimens with blue light and produces three-dimensional images?
a) Fluorescence microscope b) Phase-contrast microscope c) Darkfield microscope d) Confocal microscope