Nitrification of NH3 to NO2– is carried out by ________, whereas NO2– to NO3– is carried out by ________
a. Bacteria / Archaea
b. Archaea / Bacteria
c. Archaea / Archaea and Bacteria
d. Bacteria and Archaea / Bacteria
Answer: D
You might also like to view...
What is the bioclimatic envelope model approach also known as?
A) forest inventory and analysis B) general circulation model C) ecological niche model D) net ecosystem productivity model
As part of your fitness training, you do biceps curls lifting two 10-lb weights. The muscle contractions enabling these movements are
A) isometric contractions. B) tetanic contractions. C) isotonic contractions. D) tendon-mediated contractions. E) ligament-mediated contractions.
Low body temperature triggers (A)______, followed by (B)_________. These hormone secretions activate cellular metabolism.
a. (A) reduction of TSH (B) reduction of thyroxin b. (A) reduction of glucocorticoid (B) up-regulation of thyroxin c. (A) up-regulation of glucocorticoid (B) reduction of thyroxin d. (A) up-regulation of TSH (B) up-regulation of thyroxin
A young graduate student is trying to identify new species of bacteria based on the criteria of Ernst Mayr
She is having a lot of trouble with this method, and then suddenly realizes that she can't use Mayr's definition of a species when it comes to bacteria. Why? (Select all correct choices.) A. DNA can be passed between bacteria of different species via horizontal gene transfer. B. DNA is never passed between bacteria of different species. C. Bacteria do not reproduce sexually and/or do not undergo meiosis. D. Bacteria form pili and, as a result, reproduce sexually.