What is an IB education? The IB programme continuum of international education This document is provisional pending review of the IB learner profile. Additional resources to support and communicate What is an IB Education? will be available in 2013â14.
Hello Ariana! Molecular weight and diffusion are inversely proportional; the greater the molecular weight, the slower the rate of diffusion. In fact, certain molecules can never pass through membranes, thus protecting the cell. I am not sure I understand your theory and second question.
474 pages on this wiki. Diffusion is the net movement of a substance from an area of high concentration to an area of low concentration.This difference in concentration is called the concentration gradient. Concentration gradient-A greater concentration gradient will mean the rate of diffusion increases. 2  This concentration gradient is kept large by removing the substance as it moves across the place where it diffuses.