What atom is responsible for the formation of free radicals in the mitochondria?
a. Calcium
b. Hydrogen
c. Sodium
d. Iron
e. Potassium
d
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Of all of the ions associated with generating the resting membrane potential, the permeability of the membrane to ________ is the most important.
A) sodium ions B) potassium ions C) chloride ions D) all of the above E) none of the above
What event at the axon terminals is stimulated by the action potential?
What will be an ideal response?
Movement of oxygen and carbon dioxide between alveoli and blood occurs by what process?
A) osmosis B) simple diffusion C) facilitated diffusion D) primary active transport E) secondary active transport
The acrosome contains enzymes that:a
digest the zona pellucida. b. digest the endometrium. c. stimulate ovulation. d. stimulate sperm motility. e. inhibit premature ejaculation.