What strategy did Benzer use to perform intragenic mapping?
A. Infection of a cell with two different viruses that had mutations in the same gene could not result in a wild type virus by recombination
B. Infection of a cell with two different viruses that had mutations in the same gene would result in a wild type virus by transduction
C. Infection of a cell with two different viruses that had mutations in different genes could result in a wild type virus by recombination
D. Infection of a cell with two different viruses that had mutations in the same gene could result in a wild type virus by recombination
D
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Consider the following reaction at equilibrium: What would be the effect of adding additional H2CO3?
A) It would drive the equilibrium dynamics to the right. B) It would drive the equilibrium dynamics to the left. C) Nothing would happen, because the reactants and products are in equilibrium. D) The amounts of CO2 and H2O would decrease.
Lymphocytic choriomeningitis (LCM) and Lassa fever are considered which type of virus?
a. Adenovirus b. Papillomavirus c. Picornavirus d. Arenavirus
Respiration is measured in a human. How do the concentrations of O2 and CO2 in inhaled air compare with exhaled air?
A. Inhaled air has less O2 and CO2 than exhaled air. B. Inhaled air has more O2 and less CO2 than exhaled air. C. Inhaled air has more O2 and CO2 than exhaled air. D. Inhaled air has less O2 and more CO2 than exhaled air.
The Cambrian explosion of life is most notable for the:
A) movement of life from the oceans to the land masses, including all kingdoms. B) appearance of the first photosynthetic organisms. C) appearance of stromatolites. D) appearance of multicellular animals, including nearly all phyla of the animal kingdom.