What are phylogenetic trees?
What will be an ideal response?
diagrammatic representations of evolutionary relationships among organisms
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Actinoplanetes have extensive ________ mycelia.
Fill in the blank(s) with the appropriate word(s).
How does the first nucleotide at the 5? end of a new mRNA chain differ from the other nucleotides in
the chain? a. The first nucleotide is always a uracil. b. The first nucleotide is always a cytosine. c. The first nucleotide retains its triphosphate group, while the others do not. d. The first nucleotide does not retain its triphosphate group, while the others in the chain do. e. The first nucleotide is always a modified cytosine.
Dental plaque is an example of
A) an endospore. B) a cell membrane. C) a biofilm. D) beneficial bacteria. E) bacterial flagella.
The "common cold" is so common because
A. no immunity to the virus develops. B. the highly variable parainfluenza virus causes colds. C. a large number of coronaviruses cause it. D. over 100 strains of rhinovirus cause colds. E. 100+ strains of Rhinovirus and several other types of virus cause "colds."