The G-protein-coupled receptors are a diverse family with this common feature
A) They are activated when a kinase molecule phosphorylates them.
B) They are activated when GTP is released from the G-protein.
C) They are activated when GTP binds to the G-protein.
D) They are activated when the ?-subunit binds to the ? and ? subunits.
Answer: C
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The form of anemia caused by lack of dietary iron is
A. pernicious anemia. B. iron deficiency anemia. C. aplastic anemia. D. hemolytic anemia.
Which of the following is correct pertaining to the longitudinal ligaments of the vertebral column?
A) Both tend to limit hyperflexion. B) Both tend to limit hyperextension. C) The anterior limits hyperextension whereas the posterior limits hyperflexion. D) The anterior limits hyperflexion whereas the posterior limits hyperextension. E) Both limit lateral flexion. Ans: C
Which bone type is longer than it is wide?
A) Short bone B) Long bone C) Flat bone D) Irregular bone
The intracellular protein ________ binds calcium ion. This complex can then activate enzymes
A) prostaglandin B) phosphodiesterase C) cyclic AMP D) calmodulin E) kinase