What process occurs when potassium ions diffuse out of a nerve cell and the inside of the cell again becomes more negative than the outside?
A) depolarization
B) polarization
C) repolarization
D) threshold
C
You might also like to view...
A fruit that develops from several ovaries in a single flower, such as a raspberry, is called a(n) ____
a. aggregate fruit b. accessory fruit c. multiple fruit d. simple fruit e. compound fruit
The selective permeability of a cell membrane is due to ____
a. the hydrophobic core formed by the phospholipid tails b. the hydrophilic end facing the cell exterior c. glycolipids on the surface of the membrane d. the position of cholesterol in the membrane bilayer e. the hydrophilic core formed by the phospholipid tails
The methanogenic archaeans are __________ that
pull electrons from __________. a. chemoautotrophs; oxygen b. chemoheterotrophs; carbon dioxide c. chemoautotrophs; water d. chemoheterotrophs; methane e. chemoautotrophs; hydrogen gas
In the biosynthetic pathway for conversion from homoserine to methionine, you identify a Neurospora crassa double mutant Met1/Met2. This mutant will grow only if which supplement(s) are added to the minimal media?
A) homoserine only B) cysteine only C) homocysteine only D) cystathionine and homocysteine E) methionine only