Cell Transport Review

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 is concentration in the context of cell transport?

Back

Concentration is the amount of a substance in a specific volume, often expressed as moles per liter.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

Front

What is osmosis?

Back

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

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (usually in the form of ATP).

Front

What does selectively permeable mean?

Back

Selectively permeable refers to a property of cell membranes that allows some substances to pass through while blocking others.

Front

What is diffusion?

Back

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

Front

What is an isotonic solution?

Back

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

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in concentration of a substance between two areas, which drives the movement of molecules.

Front

What role do proteins play in active transport?

Back

Proteins, specifically transport proteins, facilitate the movement of substances across the cell membrane during active transport.