The most important polar molecule is ________ because it is practically a universal solvent.
A) nucleic acid
B) water
C) magnesium sulfate
D) sodium chloride
E) bicarbonate
B) water
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An excitatory neurotransmitter _____ the postsynaptic membrane
a) depolarizes b) repolarizes c) hyperpolarizes d) does not affect the polarity of e) moves across channels in
When the radius and ulna are parallel with one another, the forearm is said to be in pronation
Indicate whether this statement is true or false.
The graph below was generated by students in a physiology lab. The top trace (myogram) shows contraction force, the bottom (EMG) shows the electrical stimulus. On the graph, label a muscle twitch. What property of muscle is being tested here? What caused the increase in force (and subsequent decrease)?
Which of the following directly stems from the ascending aorta before it branches into the circumflex branch and anterior interventricular branch?
A) Right coronary vein B) Great cardiac vein C) Left coronary vein D) Right coronary artery E) Left coronary artery