Biogeography is the study of
a. the distribution of land masses.
b. the patterns in the geographical distribution
of species.
c. the patterns of species dispersal.
d. the pattern of population demographics.
e. none of these
B
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Scientists currently theorize that:
A. it is possible to synthesize a simple cell similar to LUCA. B. cells from the Archaea group are most similar to LUCA. C. cells from the Bacteria group can be mutated so they revert to LUCA. D. evolution created LUCA from the Archaea group.
Before a stoma opens:a
the level of carbon dioxide inside the leaf increases. b. potassium ions are actively transported out of guard cells. c. potassium ions are actively transported into guard cells. d. the turgor pressure inside the guard cells decreases. e. water moves by osmosis out of the guard cells.
Which tissue type includes fat and blood?
A) muscle B) connective C) epithelial D) nervous
When Griffith experimented with two types of Streptococcus pneumoniae, he found that if the
A) non-deadly strain was mixed with the heat-killed, deadly strain before injection, the mice died. B) non-deadly strain was mixed with the heat-killed, non-deadly strain before injection, the mice died. C) deadly strain was heat-killed before injection, the mice died. D) non-deadly strain was mixed with the heat-killed, deadly strain before injection, the mice lived.