During the passage of a nerve impulse,

a. sodium ions pass through gated channels.
b. positive feedback causes more sodium ions
to enter the cell.
c. the interior of the cell becomes positive
relative to the outside.
d. changing voltage increases the number of
open gates.
e. all of these occur.


E

Biology & Microbiology

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Which of the following statements regarding helminths causing intestinal distress plus migratory symptoms is incorrect?

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Which eukaryotic supergroup includes red algae, green algae, and land plants?

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