As you see, the yellow particles' concentration gradient goes in the other direction as the purple particles, but there's no magic to this. You just have to imagine a bunch of things just bouncing …

Substances transported through facilitated diffusion still move with the concentration gradient, but the transport proteins protect them from the hydrophobic region as they pass through.

Diffusion occurs when particles move from an area of high concentration to low concentration, creating a concentration gradient. This natural, energy-free process occurs due to the random movement of …

Each individual substance in a solution or space has its own concentration gradient, independent of the concentration gradients of other materials, and will diffuse according to that gradient.

To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right …

Active transport transports or moves materials against the concentration gradient, that is, from low to high, and the size doesn't matter here like facilitated diffusion, only the concentration.

There are two main categories of passive transport: simple diffusion (sometimes called “diffusion”) and facilitated diffusion. Both types of passive transport involve substances moving across the cell …

Diffusion is the movement of particles down their gradient. A gradient is any imbalance in concentration, and moving down a gradient just means that the particle is trying to be evenly distributed …

Facilitated diffusion is a type of passive transport that uses specialized proteins, such as channel proteins and carrier proteins, to help molecules move across a cell membrane. In this process, …

Diffusion refers to the movement of molecules from an area of high concentration to an area of lower concentration. Osmosis is a type of diffusion specifically for water molecules moving across a semi …