The Cell Membrane

question 26

Multiple Choice

The cell membrane

• A) maintains the integrity of the cell.
• B) controls the entry and exit of various substances.
• C) provides a barrier to water-soluble substances.
• D) has all of the above characteristics.

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Definitions:

Absolute Threshold

The minimum intensity at which a stimulus can be detected 50% of the time.

Sensory Ability

The capacity to perceive and process stimuli through the senses.

Vision

The ability to perceive the environment through light in the form of images interpreted by the brain via the eyes.

Blindsight

A condition where individuals can respond to visual stimuli without consciously perceiving them, typically as a result of damage to the primary visual cortex.