The species richness of high-latitude communities is __________ compared with that of low-latitude
communities.
a. low
b. high
c. no different
d. more dense
e. complex
A
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The ribosomal RNA studies that led to the division of prokaryotic organisms into the Bacteria and the Archaea were begun by
A. Watson. B. Pasteur. C. Woese. D. Needham.
Grasses are usually the first plant species to colonize sand dunes
Indicate whether the statement is true or false
Adenylyl cyclase is activated directly by:
a. a G protein subunit bound to GTP. b. a G protein subunit bound to GDP. c. cAMP. d. a protein kinase. e. a hormone.
Which of the following is evidence for evolution?
A) Bacteria becoming resistant to antibiotics over time B) Mosquitoes becoming resistant to pesticides C) Cells with common features and chemically similar DNA D) All are evidence for evolution