Factors that contribute to the spread of poliovirus include
> Its ability to survive the harsh conditions of the gastrointestinal tract
> An ability to produce endospores
> The lack of an effective vaccine
> An ability to spread via fomites contaminated with feces
> Its ability to survive the harsh conditions of the gastrointestinal tract
> An ability to spread via fomites contaminated with feces
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The scientific method can be best described as:
a. implementing an experiment. b. inductive and deductive reasoning. c. collecting data from the laboratory. d. an orderly set of procedures for learning about and interpreting the world. e. a rigid set of procedures that cannot be deviated from.
You have discovered a new organism that displays bilateral symmetry during its larval stage, radial symmetry as an adult, develops three germ layers during embryonic development, and forms a mouth opposite the blastopore. Which classification for this organism is most likely?
a. Ctenophora b. Placozoa c. Echinodermata d. Cnidaria
The respiratory pigment you would find in a blue crab or octopus is
A. hemophilin. B. ferritin. C. calmodulin. D. hemoglobin. E. hemocyanin.
The V domain of an immunoglobulin heavy chain is generated by somatic recombination of
a. V, D, and J genes. b. V and C genes. c. V and H genes. d. V and D genes. e. V, C, and H genes.