Who developed a rabies vaccine by separating bacteria from virus using a filter?
A. Leewonhoek
B. Koch
C. Pasteur
D. Cohn
Ans: C. Pasteur
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An endotoxin is ________.
A. secreted by gram-positive organisms B. indicative of gram-negative bacterial infection C. secreted by pathogenic organisms D. indicative of fungal infections E. indicative of viral infections
Which of the following are compounds?
A) H2O, O2, and CH4 B) H2O and O2 C) O2 and CH4 D) H2O and CH4, but not O2
What would be the outcome, in genetic terms, of recombination between sister chromatids?
a. Genetic diversity is unaffected. b. Genetic diversity is decreased. c. Genetic diversity is increased. d. Nonhomologous chromatids are formed.
A bacteriophage that can integrate its genome into the host chromosome and not cause lysis of the host cell is said to be ________.
A. temperate B. virulent C. avirulent D. moderate