With respect to nitrogen utilization, relatively few bacteria can use NH3 whereas many more can make use of N2

Indicate whether the statement is true or false.


Answer: FALSE

Biology & Microbiology

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In the viral disease, _____, motor neurons are destroyed

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

Biology & Microbiology

What holds base pairs together?

A.) hydrogen bonds B.) sugar-phosphate backbones C.) pairs of double-ringed nucleotides D.) nitrogen-carbon bonds

Biology & Microbiology

The rusts and smuts that seriously affect crop plants are

A. basidiomycetes. B. zygomycetes. C. ascomycetes. D. actinomycetes. E. chytrids.

Biology & Microbiology

Please place the steps in the correct order to assess your understanding of the clinical stages of tuberculosis infection and disease progression.

> Inhaled into lungs > Exposure to TB droplets > Lung macrophages engulf bacilli, infection occurs in 80-90% of cases > Recurrent disease; tubercles break down; bacilli are released into lung cavities and circulation > Primary TB disease with tubercles, symptoms occur in 5-10% of cases within 2 years > Latency; bacilli go dormant in lungs; carrier state without symptoms may last for many years > Disease spreads to extrapulmonary sites such as kidney, bones, brain with severe morbidity

Biology & Microbiology