The continuously sparking electrodes in the apparatus used in the Miller-Urey experiment simulated ____
a. solar energy
b. lightning strikes
c. volcanic eruptions
d. radioactivity
e. hydrothermal vents
ANSWER: b
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The evolution of a number of ecologically diverse species from a common ancestral species is
a. parapatric speciation. b. sympatric speciation. c. adaptive radiation. d. phyletic gradualism. e. convergent evolution.
The fovea
a. is the blind spot produced by the optic nerve entering the eye. b. is the region of the retina filled with cones that allows the most acute vision. c. is the region of the retina that has the greatest concentration of rods that enable sight under extremely dim conditions. d. focuses light on the retina. e. is the anterior fluid-filled chamber of the eye.
In aerobic respiration, chemiosmotic generation of ATP is driven by:
A. Pi transfer through the plasma membrane. B. a difference in H+ concentration on the two sides of the inner mitochondrial membrane. C. large quantities of ADP. D. osmosis of macromolecules. E. the Na+/K+ pump.
The term for a close association between organisms of two or more species is
A) symbiosis. B) exotoxin. C) endotoxin. D) mixotrophic.