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 are the two main types of cell transport?

Back

Passive transport and active transport.

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 is active transport?

Back

Active transport is the movement of substances against the concentration gradient, requiring energy (ATP) to occur.

Front

Define diffusion.

Back

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

Front

What is facilitated diffusion?

Back

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

Front

What is osmosis?

Back

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

Front

What does it mean for a solution to be isotonic?

Back

An isotonic solution has equal concentrations of solute and solvent on both sides of the membrane, resulting in no net movement of water.

Front

What happens in a hypertonic solution?

Back

In a hypertonic solution, the concentration of solute is higher outside the cell than inside, causing water to move out of the cell and potentially leading to cell shrinkage.

Front

What happens in a hypotonic solution?

Back

In a hypotonic solution, the concentration of solute is lower outside the cell than inside, causing water to move into the cell and potentially leading to cell swelling or bursting.