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.
Diffusion is the movement of molecules due to random thermal motion. Osmosis is the movement of molecules due to different concentrations. Molecules will move from regions of high concentrations to lower concentrations. These transport phenomena can take place through membranes if the pressure is great enough.