The placement of an organism into a domain is made on the basis of
A) G + C content.
B) cell ultrastructure.
C) ribosomal RNA analysis.
D) serological tests.
E) Gram-stain reactions.
C
You might also like to view...
The type of Escherichia coli that produces a verotoxin similar to the one produced by Shigella dysenteriae is ________ E. coli
A) enterohemorrhagic B) enterotoxigenic C) enteropathogenic D) enteroimmunogenic
Turbidity currents are thought to have contributed to the formation of the:
a. Hudson River Canyon. b. Chesapeake Bay. c. Galveston Bay Canyon. d. San Francisco Bay. e. Scripps Submarine Canyon.
Which provides the most direct evidence for evolution?
a. biogeography b. the fossil record c. molecular biology d. convergent evolution e. comparative anatomy
The ionic bond of sodium chloride is formed as a result of:
A) sodium giving up a proton to chlorine. B) both sodium and chlorine losing electrons. C) sodium gaining an electron from chlorine. D) sodium giving up an electron to chlorine. E) sodium and chlorine sharing electrons.