The metabolic feature that defines Thaumarchaeota is ________ ________.
What will be an ideal response?
ammonia fixation
ammonia-fixation
nitrification
ammonia oxidation
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Which of the following pertains to Borrelia burgdorferi?
A. Coccus B. Bacillus C. Spirochete D. Filament
The two factors that contribute to water uptake by the plant are ________ and ________
a. transpiration / photosynthesis b. positive pressure / tension c. active transport / transpiration d. respiration / translocation
Most animal lineages evolved during the ___
period.
a. Cretaceous b. Devonian c. Ordovician d. Silurian e. Cambrian
What is the first step in the production of a siRNA?
A. infection with a virus B. cleavage to form a short double-stranded RNA C. design of an experimental treatment D. transcription from a nuclear gene E. export of the pre-miRNA from the nucleus