The level of depolarization at which an action potential will be triggered is referred to as the
A. resting potential.
B. membrane potential.
C. cationic potential.
D. refractory potential.
E. threshold potential.
E. threshold potential.
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What evidence exists of the angiosperms that lived during the Cretaceous period?
a. cave art depictions b. preserved DNA c. fossilized leaves d. botanical drawings and lab notes
Pharming refers to the use of transgenic animals and plants to produce protein drugs, such as
A) the production of the blood factor antithrombin III in goat milk. B) the production of factor VIII protein, the blood-clotting factor, by bacteria. C) GM plants that have enhanced nutritional value. D) a transgenic monkey model for Huntington disease.
Short, hairlike structures used only by eukaryotic cells for movement are called
A) pili. B) flagella. C) fimbriae. D) pseudopodia. E) cilia.
Which of the following cell shapes look like a comma?
A) spirochetes B) stella C) bacilli D) vibrio E) coccobacilli