The shaded group includes all of the species that were derived from one common ancestor, this group could also be called a(n)
A. polyphyletic taxon.
B. paraphyletic taxon.
C. phylum.
D. homology.
E. clade.
E. clade.
Biology & Microbiology
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How many DNA triplets encode 60 amino acids?
A. 180 B. 30 C. 20 D. 60
Biology & Microbiology
Which of the following pairs of microorganisms are NOT likely to form close associations or consortia?
A) purple sulfur bacteria and dissimilative sulfur-reducers B) dissimilative sulfur-reducers and dissimilative sulfur-oxidizers C) nitrogen-fixing cyanobacteria and fungi D) nitrogen-fixing cyanobacteria and dissimilative sulfate-reducers
Biology & Microbiology
After a meal,
a. ATP production slows. b. blood glucose levels remain constant. c. insulin levels rise. d. glycogen is used. e. glucagon levels rise
Biology & Microbiology
Which cyclin protein is present throughout the majority of the cell cycle?
1) D 2) E 3) A 4) B
Biology & Microbiology