Carl Woese's evolutionary studies that led him to propose the three domain taxonomic system compared nucleotide sequence present in:
A) the nuclei of eukaryotic cells
B) 16S rRNA genes
C) cyanobacteria
D) thermophiles
E) DNA polymerase genes
Ans: B) 16S rRNA genes
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Which of the three types of viruses shown above would you expect to include a capsid(s)?
A) I only B) II only C) III only D) I and II only E) I, II, and III
A PCR assay has been developed for the detection of the bacterium (Borrelia burgdorferi) that causes Lyme disease. Unfortunately this method cannot differentiate between an active disease and a treated or inactive disease
Indicate whether the statement is true or false.
Within a single molecule of water, as shown, bonds are formed between oxygen and hydrogen.
A. nuclear
B. hydrophobic
C. hydrogen
D. covalent
E. ionic
European kestrels feed on Microtus voles, with the "kill" rate, defined as the number of prey taken during the breeding season, as linearly proportional to the density of Microtus. This type of functional response is referred to as
A) Type I. B) Type II. C) Type III. D) Type IV.