Antibiotics were discovered in 1928 by:
A. Sir Alexander Fleming
B. Sir Arthur Fleming
C. Louis Pasteur
D. Ewins and Phillips
a
Rationale: Antibiotics were discovered in 1928 when Sir Alexander Fleming was performing research on influenza. One year later, he found penicillin by culturing the mold Penicillinum notatum.
You might also like to view...
Which one of the following statements about a limb presentation is true?
A) The EMT can try one time to deliver the baby. B) There is little danger unless the umbilical cord is also protruding. C) The baby is most likely premature. D) A cesarean section birth will be required.
Hemoglobin C disease has altered solubility properties similar to hemoglobin S disease. What accounts for this altered solubility?
a. Heme iron is in the ferric form rather than ferrous form. b. The hemoglobin remains in the tense structure. c. A nonpolar amino acid is substituted for a polar amino acid. d. A polar amino acid is substituted near the pocket where heme binds.