Blood pressure is lowest in
A. arteries.
B. venules.
C. capillaries.
D. arterioles.
E. veins.
Answer: E
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Describe the functional groups that are considered acidic or basic
A) An amino group acts as a base because it can accept hydrogen ions, and a carboxyl group acts as an acid because it releases a hydrogen ion. B) An amino group acts as a base because it releases a hydrogen ion, and a carboxyl group acts as an acid because it can accept hydrogen ions. C) A phosphate group acts as a base because it can accept hydrogen ions, and a hydroxyl group acts as an acid because it releases a hydrogen ion. D) A phosphate group acts as an acid because it can accept hydrogen ions, and a hydroxyl group acts as a base because it releases a hydrogen ion. E) Phosphate groups can act as an acid or a base depending on the pH of the surrounding solution.
What membrane divides the outer ear from the middle ear?
A) tympanic membrane (ear drum) B) auricle (pinna) C) vestibule D) cochlea
Which feedback system structure provides input to the control center?
a) receptor b) muscle c) response d) effector e) efferent pathway
The prefix ________ means "externally."
A) oligo- B) a- C) exo- D) eu-