Active immunization of a population will raise the general level of herd immunity.

Answer the following statement true (T) or false (F)


True

Biology & Microbiology

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Imagine that you have set up a genetic screen to identify E. coli mutants that cannot metabolize the amino acid tryptophan for energy. Beginning with a master plate containing many colonies, you prepare replica plates on medium with glucose or tryptophan as the only energy source. You would look for colonies that _____.

A) cannot grow on either type of media B) can grow on both types of media C) can grow only on the plates with tryptophan D) can grow only on the plates with glucose

Biology & Microbiology

The main route of transmission of the poliovirus is ________.

A. body contact B. respiratory secretions C. food and water D. fomites

Biology & Microbiology

Based on this graph of vascular plant species on a volcanic island, at what point would you hypothesize that sea gulls began nesting on the island?

1.1998 2.1973 3.1965 4.1986

Biology & Microbiology

The three main anatomical and functional divisions of the brain are the

A) forebrain, midbrain, hindbrain. B) frontal, parietal, occipital. C) cerebellum, medulla oblongata, pons. D) ventricles, meninges, nerve tracts. E) hypothalamus, thalamus, pituitary.

Biology & Microbiology