Which of the following statements about the nitrogen cycle is false?
a) Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+).
b) Denitrification by bacteria converts nitrates (NO3-) to nitrogen gas (N2).
c) Nitrification by bacteria converts nitrates (NO3-) to nitrites (NO2-).
d) Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
Answer: c) Nitrification by bacteria converts nitrates (NO3-) to nitrites (NO2-).
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Answer the following statement true (T) or false (F)
During rapid expulsion of air, which additional muscles are involved?
a. neck muscles b. back muscles c. abdominal muscles d. pelvic muscles e. eye muscles
Drug susceptibility testing
A) Determines if normal flora will be affected by antimicrobics. B) Determines the patient's response to various antimicrobics. C) Determines if the drug is increasing to toxic levels in a patient. D) Determines the pathogen's identity. E) Determines the pathogen's response to various antimicrobics.
Which of the following ions is associated with auxin and used during signal transduction that causes a plant to bend towards a light source?
A. H+ B. Ca2+ C. Mg2+ D. Na+