Membrane Transport

Front

What is membrane transport?

Back

Membrane transport refers to the movement of substances across a cell membrane, which can occur via passive or active mechanisms.

Front

Define hypotonic solution.

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, leading to water moving into cells.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells and may burst due to the influx of water.

Front

Define hypertonic solution.

Back

A hypertonic solution has a higher concentration of solutes compared to another solution, causing water to move out of cells.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out to balance the solute concentration.

Front

Define isotonic solution.

Back

An isotonic solution has an equal concentration of solutes compared to another solution, resulting in no net movement of water.

Front

What is osmosis?

Back

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

Front

What is the role of the cell membrane in transport?

Back

The cell membrane regulates the entry and exit of substances, maintaining homeostasis.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (ATP).

Front

What is passive transport?

Back

Passive transport is the movement of substances across a membrane without the use of energy, following the concentration gradient.