The onset of puberty is signaled by
A. emotional upheaval.
B. a growth spurt.
C. a halt to growth.
D. the ability to obtain a drivers license.
E. attainment of full adult stature.
Answer: B
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Masses of insoluble material that are sometimes found in cytosol are known as
A) colloids. B) emulsifiers. C) solutes. D) crystals. E) inclusions.
Depolarization of the ventricles is represented on an electrocardiogram by the
A) P wave. B) T wave. C) S wave. D) QRS complex. E) PR complex.
A change in pH that has a respiratory cause is associated with an abnormal concentration of:
a. H2O b. CO2 c. HCO3- d. NH3 e. NH4+
After taking their wedding vows, a bride and groom often ceremonially use which of the following muscles before walking away from the altar?
A. Platysma B. Quadriceps femoris C. Levator labii superioris D. Depressor anguli oris E. Orbicularis oris