Which of the following is not part of the axial skeleton?
A. pelvic girdle
B. ribs
C. skull
D. sternum
E. vertebral column
A. pelvic girdle
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Sulfonamides inhibit the production of folic acid and, therefore, inhibit the synthesis of ________.
A. peptidoglycan B. aromatic amino acids C. purines and pyrimidines D. ribose
Many medical studies include a control group in which patients receive a medically ineffective treatment that resembles the treatment tested. What do we call the ineffective treatment?
A. The hypothesis B. The controlled experiment C. The placebo D. The dependent variable
What is the exchange of gases between the atmosphere and the blood through the alveoli called?
a) external respiration b) internal respiration c) inhalation d) cellular respiration
The most common fatal genetic disorder of Caucasians is
A. muscular dystrophy. B. sickle cell anemia. C. cholera. D. cystic fibrosis. E. hemophilia.