Why can't prokaryotic species be defined as a group of similar organisms that could sexually reproduce together?
A) The mating rituals of bacteria have not been studied enough.
B) Bacteria are all too different to be considered similar.
C) We can't see them in enough detail to tell how similar they really are yet.
D) Bacteria reproduce asexually.
E) They can be.
Answer: D
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A. tRNA nucleotidyltransferase B. Aminoacyl-tRNA synthetase C. RNA polymerase D. Peptidyl transferase
The colonization of Glacier Bay, Alaska by lichen and mosses allowed the growth on the mountain avens, a(n) ____
species.
a. nitrogen-fixing b. predator
c. keystone d. K-selected e. r-selected
Herons and egrets are members of the:
a. gulls. b. tubenoses. c. shorebirds. d. pelicans. e. duck family.
A house plant that has been placed in the
window will grow toward the source of light because auxin
a. becomes more concentrated on the illuminated side of the plant. b. becomes less concentrated on the illuminated side of the plant. c. becomes more concentrated in the roots of the plant. d. inhibits the growth of cells on the shady side, so the cells on the sunny side grow faster. e. is produced only when the sun shines