Who discovered penicillin?
A) Fleming
B) Ehrlich
C) Kitasato
D) Pasteur
E) Domagk
A
Bloom's Taxonomy: Knowledge
Section: The Golden Age of Microbiology
Learning Outcome: 1.18
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What type of receptor modification in the brain would result in increased social behavior of mice?
A. decrease in the abundance of testosterone receptors B. increase in the abundance of epinephrine receptors C. increase in the abundance of ADH receptors D. decrease in the abundance of cortisol receptors E. increase in the abundance of insulin receptors
In the Hershey-Chase experiments, the radioactive tracers 32P and 35S were used to track DNA and protein,
respectively, because _____.
a. bacterial DNA contains sulfur and viral DNA contains phosphorus b. viral DNA contains sulfur and bacterial DNA contains phosphorus c. only DNA contains phosphorus and only protein contains sulfur d. DNA has more sulfur than protein, and protein has more phosphorus than DNA
e. protein has more sulfur than DNA, and DNA has more phosphorus than proteinAn individual who shelters an infectious agent long after recover is called a(n) _____ carrier.
a. incubation b. chronic c. passive d. asymptomatic e. convalescent
In an "ideal" world, organisms that are fine-tuned for reproduction would ________
A) mature at birth B) produce high-quality offspring continuously and in high numbers C) live forever D) All of the above, taken together.