Fossilized wood and bone fragments can be accurately aged using ____
a. Thorium-232
b. Uranium-238
c. Uranium-235
d. Potassium-40
e. Carbon-14
ANSWER: e
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Lysosomal storage diseases are the result of deficiencies in lysosomal proteins. An example of one such disorder is
A) adult-onset diabetes. B) tuberculosis. C) Huntington's disease. D) chronic fatigue syndrome. E) Tay-Sachs disease.
Replication of DNA produces
a. RNA molecules. b. only new DNA. c. two DNA strands that are both copies of the parent strand. d. one completely new DNA strand and the old parent strand is degraded. e. new proteins.
RNA interference is a process by which noncoding RNA molecules regulate gene expression. Indicate whether the statement is true or false
Escherichia coli O157:H7 is primarily associated with which of the following foods?
A) ground beef B) dairy products C) eggs D) fomites E) pork