The Movement of Substances from a Region of High Concentration

question 20

Multiple Choice

The movement of substances from a region of high concentration to a region of low concentration is known as

• A) Active transport
• B) Osmosis
• C) Diffusion
• D) Negative feedback

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Definitions:

Synaptic Gap

The tiny space between neurons where neurotransmitters are released, allowing communication between cells.

Diffusion

The process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Synaptic Vesicles

Membrane-bound structures within presynaptic neurons that contain neurotransmitters, which are released into the synaptic gap in response to a neuron's action potential.

Attractive Forces

Forces that cause particles or objects to come together, commonly found in physics and chemistry, such as gravitational or electromagnetic forces.