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
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In the viral disease, _____, motor neurons are destroyed
Fill in the blank(s) with the appropriate word(s).
What holds base pairs together?
A.) hydrogen bonds B.) sugar-phosphate backbones C.) pairs of double-ringed nucleotides D.) nitrogen-carbon bonds
The rusts and smuts that seriously affect crop plants are
A. basidiomycetes. B. zygomycetes. C. ascomycetes. D. actinomycetes. E. chytrids.
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