Nitrogen gas is first converted into ___ by
certain___ before it enters the land nitrogen
cycle.
a. nitrate...bacteria
b. ammonium...bacteria
c. elemental nitrogen...bacteria
d. nitrate...bacteria and fungi
e. ammonium...bacteria and fungi
B
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Transcription of a gene depends on the presence of a particular combination of enhancers and their regulatory transcription factors, a type of gene regulation called ____ control
Fill in the blank with the appropriate word.
The variance is sum of the standard deviation from the mean divided by the degrees of freedom
Indicate whether the statement is true or false
Oxidative–fermentative base–polymyxin B–bacitracin-lactose (OFPBL) media is the best media to use to isolate which one of the following organisms from the sputa of patients with cystic fi-brosis?
a. A. delafieldii b. R. pickettii c. B. cepacia d. B. pseudomallei
In species where the young are precocial, meaning requiring little parental care, males may be more likely to be what?
A. monogamous B. polygynous C. polyandrous D. altricial