Gram-negative nitrogen-fixing bacteria found in association with plant roots are
A) alphaproteobacteria.
B) betaproteobacteria.
C) cyanobacteria.
D) gammaproteobacteria.
E) deeply branching bacteria.
A
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Which one of the following cellular processes occurs in the nucleus of a eukaryote?
A. transcription B. RNA processing C. translation D. DNA replication
Thick filaments are parallel bundles of ____ molecules
a. actin b. tropomyosin c. acetylcholine d. myosin e. troponin
How would the cDNA created in a lab compare to the original DNA?
A) It would contain only the genes that were producing proteins in the cell at the time the cDNA was created. B) It would be identical to the original DNA. C) It would be a single strand instead of the original double-stranded DNA. D) It would be circular, similar to bacterial DNA.
What are selective media, differential media, and enriched media? When are they used?
What will be an ideal response?