LAB Quiz 1 - Diffusion

What are the factors that affect the rate of diffusion across cell membranes?

Diffusing molecules flow from high concentration to low concentration, and the rate of diffusion increases when the difference in concentration is greater. ... The two factors that are particular to diffusion through a membrane are surface area and permeability.

What is Diffusion?

Diffusion is a process of passive transport in which molecules move from an area of higher concentration to one of lower concentration. The passive movement of a solute across a permeable membrane

What is concentration gradient?

The process of particles, which are sometimes called solutes, moving through a solution or gas from an area with a higher number of particles to an area with a lower number of particles. The areas are typically separated by a membrane. A concentration gradient is present when a membrane separates two different concentrations of molecules. The difference in concentration of molecules within a distance.

What are the factors that affect the rate of diffusion?

The rate of diffusion is increased when: The distance is decreased. The surface area is increased. The concentration difference (concentration gradient) is increased.

Link to Page Explaining Diffusion

https://courses.lumenlearning.com/boundless-biology/chapter/passive-transport/