The production of cyclic AMP in Dictyostelium results in
a. sexual reproduction.
b. cell division.
c. swimming.
d. spore production.
e. aggregation of cells.
E
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You can be outside on an day where the air temperature is 85oF for hours without getting cold. However, you will get cold in 85oF water before too long unless you are very active. This difference is due to
A. higher heat radiation in water relative to air. B. higher heat conduction in water relative to air. C. higher heat convection in water relative to air. D. higher heat evaporation in water relative to air. E. higher heat transpiration in water relative to air.
The hypothesis that mitochondria and chloroplasts originated from the phagocytic activity of
prokaryotes that was not followed by digestion is called the
a. theory of natural selection. b. endosymbiotic hypothesis. c. ribozymes-first hypothesis d. Oparin-Haldane hypothesis. e. stromatolite hypothesis
If atmospheric pressure is 760 mm Hg, what would you expect the pressure inside the lungs to be during a forceful
expiration? a. 0 mm Hg b. 750 mm Hg c. 756 mm Hg d. 760 mm Hg e. 764 mm Hg
The percentage of the human genome made up of structural DNA is ________.
Fill in the blank(s) with the appropriate word(s).