Cell Transport Review

Front

What is Passive Transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically from an area of high concentration to an area of low concentration.

Front

What is Active Transport?

Back

Active transport is the movement of molecules across a cell membrane from an area of low concentration to an area of high concentration, requiring energy input.

Front

What is Facilitated Diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move molecules across the cell membrane from high to low concentration.

Front

What is Osmosis?

Back

Osmosis is the passive transport of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, a cell will lose water and shrink due to the higher concentration of solutes outside the cell.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solute particles from high to low concentration, while osmosis specifically refers to the movement of water across a membrane.

Front

What role do protein channels play in cell transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane, aiding in both passive and active transport.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of a cell, causing water to enter the cell and potentially leading to swelling.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is the state where the concentration of molecules is equal on both sides of the membrane, resulting in no net movement of molecules.