Unformatted text preview: an action potential through a single channel.
47. Which of the following statements about interferons is TRUE?
A. They are only produced by immune cells.
B. They are produced in response to extracellular pathogens.
C. They inhibit protein synthesis.
D. They are part of the specific immune response.
E. Interferons bind to receptors in the cytoplasm of uninfected cells.
48. Which of the following statements about the functioning of a rod cell is TRUE?
A. Rod cells are modified neurons and fire action potentials.
B. The membrane potential of a rod cell hyperpolarizes when exposed to light.
C. The resting potential of a rod cell in the dark is more negative than a typical neuron.
D. Rod cells are most abundant in the fovea.
E. Rod cells are not as sensitive to light as cone cells....
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- Winter '08
- following statements, Ranvier E