When an Appropriate Odor Molecule (Odorant) Binds to Its Receptor

question 60

Multiple Choice

When an appropriate odor molecule (odorant) binds to its receptor, depolarization of the membrane occurs. Does this mean a signal goes directly to the brain and the odor is perceived by the brain?

• A)Yes, because if an EPSP is generated, then the cell was depolarized and the signal was sent to the brain.
• B)Yes, because if an EPSP is generated, then the match between the molecule and its receptor was appropriate and the signal was sent to the brain.
• C)No, because although each EPSP is sent to the brain, the brain doesn't perceive the odor or taste unless an appropriate number of EPSPs are sent by the odor sensory cells.
• D)No, because enough of the appropriate molecules must bind to the receptors for a summed response from all the EPSPs to generate an action potential that is transmitted to the brain.

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Definitions:

Deviancy

A rephrased definition: Actions or behaviors that deviate from what is considered normal or acceptable by society.

Internalize

The process of adopting the beliefs, attitudes, or values of others as one's own, often unconsciously.

Obesity

A medical condition characterized by excessive body fat that increases the risk of health problems.

Bad

Having detrimental qualities or causing harm, discomfort, or dislike; morally objectionable.