Plants readily take up nitrogen from atmosphere.
A. true
B. false
B. false
Biology & Microbiology
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____ requires both a template and an appropriately placed 3' end to synthesize a nucleic acid
Fill in the blank with the appropriate word.
Biology & Microbiology
Clonal selection requires the presence of foreign antigens.
Answer the following statement true (T) or false (F)
Biology & Microbiology
Which of the following characteristics is present in all chordates?
A. gills B. notochord C. vertebrae D. All of the above are correct.
Biology & Microbiology
The fact that regeneration is a common type of reproduction in sea stars suggests that
A. sea stars have almost no predators. B. adult sea star cells retain the mechanism to form a complete animal. C. sea star populations have high levels of genetic diversity. D. all sea stars are haploid.
Biology & Microbiology