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

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

The respiratory pigment you would find in a blue crab or octopus is

A. hemophilin. B. ferritin. C. calmodulin. D. hemoglobin. E. hemocyanin.

Biology & Microbiology

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.

Biology & Microbiology