The evolution of conducting tubes (sieve tubes) in land plants and aquatic brown algae is an example of
A. homoplasy caused by convergence.
B. homoplasy caused by evolutionary reversal.
C. homoplasy caused by common descent.
D. homology caused by convergence.
E. homology caused by common descent.
Answer: A
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Starting with glycolysis, lactic acid and ethanol fermentation generate only two ATP per glucose molecule. The remaining chemical energy from the glucose is found primarily in:
A. GTP. B. NADH. C. FADH2. D. lactic acid and ethanol. E. CO2.
The resting potential of a neuron is approximately
a. ?70 microvolts. b. ?70 millivolts. c. ?70 volts. d. ?70 electrovolts. e. ?70 megavolts.
The Sahara Desert and the Negev Desert belong to the same ________
A) community B) savanna ecosystem C) biome D) temperate grassland
Diseases such as malaria, dengue fever, and Chagas disease may be spread by any blood-sucking arthropod.
Answer the following statement true (T) or false (F)