Cell Transport

Front

What is cell transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through various mechanisms such as diffusion, osmosis, and active transport.

Front

What happens to a cell in a hypertonic solution?

Back

A cell placed in a hypertonic solution will lose water and shrink due to the higher concentration of solutes outside the cell.

Front

Define isotonic solution.

Back

An isotonic solution is one that has the same solute concentration as the inside of the cell, resulting in no net movement of water.

Front

What is osmosis?

Back

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

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy, usually in the form of ATP.

Front

What is passive transport?

Back

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

Front

What occurs in a hypotonic solution?

Back

In a hypotonic solution, a cell will gain water and may swell or burst due to the lower concentration of solutes outside the cell.

Front

What is the role of the cell membrane in transport?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis and allowing for selective transport of substances.

Front

What is the difference between facilitated diffusion and simple diffusion?

Back

Facilitated diffusion requires specific transport proteins to help move substances across the membrane, while simple diffusion does not.