Nitrogen is made available to plants for their use by the process(es) of
a. ammonification only.
b. nitrification only.
c. nitrogen fixation only.
d. ammonification and nitrification only.
e. ammonification, nitrification, and nitrogen fixation.
E
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Given that the atmospheric concentration of CO2 is approximately 300 ppm, is photosynthesis in the field limited by the concentration of CO2?
a. No. b. Yes
Enzymes in the fluid-filled stroma reduce ____
What will be an ideal response?
Which of the following are contributors to viral genome evolution?
A) the large number of virions released within a host B) quick replication time and the large number of virions released within a host C) superior proofreading by RNA polymerases compared to DNA polymerases D) quick replication time and superior proofreading by RNA polymerases compared to DNA polymerases E) quick replication time
Why are Koch's postulates important to microbiology?
A) They provide a way to select the most effective concentration of antibiotic to use for a patient. B) They enable us to characterize the species of the infectious disease whether it is a bacteria, virus, or fungi. C) They explain how a particular disease produces specified signs in a patient. D) They allowed us to identify the causative pathogens of many infectious diseases. E) They demonstrate the preferred route of infection for a particular disease.