BIO202H5 Lecture Notes - Lecture 2: Semipermeable Membrane, Partial Pressure, Ais People
Document Summary
Sustaining life: oxygen is the necessary component of obtaining any nutrients and energy, oxygen is more abundant and available, the video was demonstrating the idea of a concentration gradient. In the video, osmosis was not represented because no solutes were being passed through a semi-permeable membrane. This is greatly dependent on the diffusion constant or coefficient. It also depends on the environment of the gas: a is the area of gas exchange diffusing the gas, l is the thickness of barrier to diffusion. How hard is it for oxygen to move through the barrier: there are 2 processes in respiration1. So you have to increase p1: l is the barrier. So, you are not increasing gas exchange enough. Gills: when operculum opens, you see gill arches and gill filaments. Muscles, gills, suction systems, pressures created at different areas of the mouth): efficiency of gas exchange you can exchange gas on most of the surfaces.
