Which of the following molecular techniques involves "DNA replication in a tube"?
A) STR B) Gel electrophoresis
C) PCR D) Transformation
C
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In which of the following organisms would one expect to find flame cells?
a. grasshoppers b. rabbits c. planaria d. sea anemone
Frogs have which of the following traits?
A. endothermic B. incomplete digestive tract C. jawless D. cartilaginous skeleton E. larval respiration with gills, but adult respiration with lungs
Flowering plants constitute ____ percent of all modern plant species
a. 30 b. 50 c. 60 d. 75 e. 90
Please choose the reason why gas gangrene infections can be treated with oxygen therapy successfully.
A) High pressure oxygen is delivered to the infected tissue, creating an unfavorable habitat for anaerobic Clostridium. B) Oxygen poisons the clostridial cells. C) The oxygen delivery produces a radioisotope of oxygen within the tissue, destroying the necrotic tissue. D) The oxygen, delivered in low concentration, creates an anaerobic environment in which the Clostridium does poorly. E) The oxygen reacts with water within the cell producing hydrogen peroxide, which kills the bacterial cells.