Biological membranes contain bilayers containing mostly ________.
A. cholesterol
B. oils
C. phospholipids
D. triglycerides
E. prostaglandins
Answer: C
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The difference between microevolution and macroevolution is that
A) microevolution affects bacteria and macroevolution affects larger organisms. B) microevolution happens slowly and macroevolution happens quickly. C) macroevolution happens slowly and microevolution happens quickly. D) microevolutionary changes are small, and macroevolutionary changes are large.
What type of pressure is not placed upon the environment as crop production expands? a. Pesticide runoff into the rivers
b. Runoff clogging rivers. c. Increase in irrigation. d. Loss of topsoil. e. Additional habitat available for many species.
Mycobacterium tuberculosis is an obligate aerobe. In which organ would you expect to find these bacteria?
A. lung B. intestines C. liver D. brain E. kidney
Nonpoint source pollutants include
a. fertilizers from lawns. b. pesticides from farm fields. c. soil erosion from construction sites. d. all of the above.