Which of the following pairs of researchers determined whether or not DNA replications is conservative, semiconservative, or dispersive?

A. Hershey and Chase
B. Meselson and Stahl
C. Beadle and Tatum
D. Watson and Crick


Answer: B. Meselson and Stahl

Biology & Microbiology

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Humans acquire the arbovirus that causes epidemic encephalitis by

A. the fecal-oral route. B. human to human contact. C. contaminated food. D. the bite of an infected mosquito

Biology & Microbiology

The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to

A. the neutrality of the vaginal mucus. B. acidity of the vagina. C. food for the resident vaginal flora. D. fertility of the host.

Biology & Microbiology

Which of the following would you expect to find in the tonsilar crypts?

A. Streptococcus B. Staphylococcus C. Neisseria D. Micrococcus

Biology & Microbiology

Another name for the Citric acid cycle is (Entner-Doudoroff/Krebs/Calvin-Benson) cycle.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology