The most fundamental grouping in the classification of living organisms is the _____
a. class
b. genus
c. family
d. order
e. species
E
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Electrophoresis separates DNA fragments on the basis of ____
a. molecular charge b. molecular bonding c. molecular size d. polarity e. nonpolarity
What is the most outstanding characteristic of prokaryotic cells?
a. Prokaryotes have an elaborate system of internal membranes. b. Prokaryotic cells do not have a cell wall. c. Prokaryotic cells contain energy-collecting pigments. d. Prokaryotic cells do not have a nuclear membrane. e. Prokaryotic cells possess a variety of organelles.
Most of the carbon dioxide produced by the body is transported to the lungs ____.
A. in gaseous form B. in the lymph system C. as carbaminohemoglobin D. in the form of bicarbonate E. as carbonic acid
In streptococcal toxic shock syndrome, pathology results from toxins in the bloodstream which may cause both a red skin rash, as well as
A) a decrease in blood pressure leading to organ failure. B) formation of a blue- or green-colored pus. C) release of foul-smelling gases from the infection site. D) peeling away of the epidermal layer of skin. E) degradation of connective tissue.