When a Substance Moves from an Area of Low Concentration

question 47

Multiple Choice

When a substance moves from an area of low concentration to an area of high concentration while using energy, the process is termed

• A) diffusion.
• B) osmosis.
• C) facilitated diffusion.
• D) pinocytosis.
• E) active transport.

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Definitions:

Eardrum

A thin membrane that separates the outer ear from the middle ear and vibrates in response to sound waves.

Basilar Membrane

A structure in the cochlea of the inner ear that plays a critical role in the sense of hearing by vibrating in response to sound, helping to translate sound waves into neural signals.

Olfactory Epithelium

The lining of the roof of the nasal cavity, containing a sheet of receptor cells for smell.

Papillae

Rounded bumps above the tongue’s surface that contain the taste buds, the receptors for taste.