Passive Transport

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration.

Front

Which type of passive transport uses the help of a transport protein?

Back

Facilitated diffusion is the type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What happens to water molecules during osmosis in a hypertonic solution?

Back

In a hypertonic solution, water molecules move out of the cell, causing the cell to shrink.

Front

What is a hypertonic solution?

Back

A hypertonic solution is one where the concentration of solutes outside the cell is higher than inside, leading to water moving out of the cell.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that requires the assistance of transport proteins to move molecules across the cell membrane.

Front

What is the difference between simple diffusion and facilitated diffusion?

Back

Simple diffusion does not require any assistance and occurs directly through the membrane, while facilitated diffusion requires transport proteins.

Front

What is an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is a hypotonic solution?

Back

A hypotonic solution is one where the concentration of solutes outside the cell is lower than inside, causing water to move into the cell.

Front

What role do transport proteins play in passive transport?

Back

Transport proteins help facilitate the movement of specific molecules across the cell membrane during passive transport.