Cell Transport

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a type of cell membrane that allows certain materials to pass through while blocking others.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

Provide an example of osmosis.

Back

A raisin swelling in a cup of water is an example of osmosis, as the raisin absorbs water.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium occurs when the concentration of particles inside a cell is the same as the concentration of particles outside the cell.

Front

What role do cell membranes play in transport?

Back

Cell membranes regulate the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances along their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What is facilitated diffusion?

Back

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

Front

What is the significance of concentration gradients in cell transport?

Back

Concentration gradients drive the movement of substances during diffusion and osmosis, influencing how materials enter and exit cells.

Front

What is the function of transport proteins in cell membranes?

Back

Transport proteins assist in the movement of substances across the cell membrane, either by facilitating diffusion or by actively transporting molecules.