Cell Transport

Active transport is the process by which cells use energy to move materials across a membrane from an area of low concentration to an area of high concentration.

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

In a hypotonic environment, water moves into the cell, causing it to swell and potentially burst.

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

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

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

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell.

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.

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

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