Which of the following describes selective permeability?
a. Ions can only travel in certain directions across the membrane.
b. Only certain molecules are allowed to cross the membrane freely.
c. Only certain types of stimulation will result in an action potential.
d. All molecules must pass through designated channels.
b
Psychology
You might also like to view...
According to the textbook, the key to memory retrevial is organization.
a. true b. false
Psychology
Studies of mutation demonstrate that
A) some mutations occur spontaneously, simply by chance. B) mutations are never desirable. C) females are more susceptible than males to harmful mutations. D) exposure to nonionizing forms of radiation, such as microwaves, can cause genetic damage.
Psychology