In the abnormal eyeball pictured here, the size of a normal eye is noted with a dotted line. This type of abnormality results in
A. astigmatism.
B. cataracts.
C. nearsightedness.
D. farsightedness.
E. glaucoma.
Answer: C
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The moraines left when glaciers retreat are characterized by
A. year-round ice. B. low nitrogen content and little organic matter. C. rich, fertile soil. D. high levels of nitrogen, phosphate and carbon.
Which antibody forms a pentamer in blood?
a. IgG b. IgA c. IgD d. IgM e. IgE
Comprehension TOP: MAKING NEW RED BLOOD CELLS
26. On average, an adult male's red blood cell count is around a. 5.4 million per cubic millimeter. b. 3.6 million per cubic millimeter. c. 4.8 million per cubic millimeter. d. 6.0 million per cubic millimeter. e. 7.1 million per cubic millimeter.
A study of echinoderm embryos, such as sea stars, confirms a similar developmental pattern to that of vertebrates. In both, the blastopore becomes the anus. This would be considered
A. convergent evolution. B. analogy. C. homology. D. behavioral data. E. synapomorphy.