A free radical is a
A) molecule with an extra electron.
B) molecule with an extra proton.
C) charged particle.
D) molecule with an extra neutron.
E) molecule with an unpaired electron.
E) molecule with an unpaired electron.
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Ascending and descending tracts can be found in which area(s) of the spinal cord?
A) 9
B) 8
C) 11, 12, 13, 14
D) 1, 2, 3
E) 4, 5, 6
Which of the following conditions would cause the amount of blood entering the ascending aorta with each contraction of the heart to increase?
A) The amount of blood sent to the lungs for oxygenation would decrease. B) The atrioventricular valves would not close. C) The heartbeat would be speeded up by the parasympathetic nervous system. D) The amount of blood entering the right atrium of the heart was increased. E) Stimulation by the sympathetic nervous system would accompany this change.
The shallow recess surrounding the cervical protrusion is known as the
A) isthmus. B) fornix. C) fundus. D) body. E) os.
An important advantage of a corporation is its
A) limited liability
B) double taxation
C) ease of corporation
D) lack of bureaucracy