Active and Passive Transport

Front

What is Active Transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy in the form of ATP.

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What is Passive Transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from an area of higher concentration to an area of lower concentration.

Front

What happens to a cell in a Hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What happens to a cell in a Hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What is Isotonic solution?

Back

An isotonic solution has the same concentration of solute particles as the cell, resulting in no net movement of water.

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What is Osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

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What is Facilitated Diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move particles across the cell membrane.

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What is Endocytosis?

Back

Endocytosis is the process by which a cell engulfs material from the outside environment, bringing it into the cell.

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What is Exocytosis?

Back

Exocytosis is the process by which a cell expels materials to the outside environment, often using vesicles.

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What is the Sodium-Potassium Pump?

Back

The sodium-potassium pump is an active transport mechanism that moves sodium ions out of the cell and potassium ions into the cell against their concentration gradients.