Plasma Membranes Allow Certain Molecules to Pass, While Blocking Others

question 57

Multiple Choice

Plasma membranes allow certain molecules to pass, while blocking others. Membranes with this property are called

• A) impermeable.
• B) freely permeable.
• C) selectively permeable.
• D) actively permeable.
• E) nonpermeable.

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Definitions:

Discriminative Stimulus

A cue or signal in the environment that indicates that a specific behavior will result in a particular consequence.

Unconditioned Stimulus

A stimulus that naturally and automatically triggers a response without any need for learning.

Primary Reinforcer

An innately reinforcing stimulus, such as one that satisfies a biological need.

Positive Punishers

Stimuli that, when introduced after a behavior, decrease the likelihood of that behavior occurring in the future.