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Title:
Smoke Diffusion-Team R-Esther, Conor, Austin, Stephanie
Description:
Both diffusion and osmosis characterize passive transport across a cell membrane. The terms both have similar meanings but do have different definitions. Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a barrier. Diffusion on the other hand is the random movement of substances from a region of high concentration to one of low concentration and can occur with or without the presence of a barrier. The movement of a substance from an area of high to low concentration is what we refer to as the "concentration gradient." Diffusion is useful to insects and other animals because they are able to spread their pheromones or their scents from areas of high concentration to areas of low concentration. In our Visual Lab Report, we displayed how diffusion works by showing the movement of cigarette smoke from the outside of a building to the inside. In the video, the smoker's smoke is released from an area of high smoke concentration (the cigarette/ smokers lungs). The smoke then travels to find an area of low smoke concentration. Because the building is a designated non-smoking area, the cigarette smoke flows through barriers (the building's walls) into the building to find an area of low smoke concentration. Those inside the building can smell the presence of cigarette smoke throughout the hallways, stairways and classroom, and are exposed to the dangerous properties of cigarette smoke. In this case, diffusion is not beneficial to either the smoker or person who smells the smoke and if anything is harmful to both of them.
Author:
estherjr
Tags:
Team, R, Bioblog, Hammer, CGS,
Smoke Diffusion-Team R-Esther, Conor, Austin, Stephanie
Description:
Both diffusion and osmosis characterize passive transport across a cell membrane. The terms both have similar meanings but do have different definitions. Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a barrier. Diffusion on the other hand is the random movement of substances from a region of high concentration to one of low concentration and can occur with or without the presence of a barrier. The movement of a substance from an area of high to low concentration is what we refer to as the "concentration gradient." Diffusion is useful to insects and other animals because they are able to spread their pheromones or their scents from areas of high concentration to areas of low concentration. In our Visual Lab Report, we displayed how diffusion works by showing the movement of cigarette smoke from the outside of a building to the inside. In the video, the smoker's smoke is released from an area of high smoke concentration (the cigarette/ smokers lungs). The smoke then travels to find an area of low smoke concentration. Because the building is a designated non-smoking area, the cigarette smoke flows through barriers (the building's walls) into the building to find an area of low smoke concentration. Those inside the building can smell the presence of cigarette smoke throughout the hallways, stairways and classroom, and are exposed to the dangerous properties of cigarette smoke. In this case, diffusion is not beneficial to either the smoker or person who smells the smoke and if anything is harmful to both of them.
Author:
estherjr
Tags:
Team, R, Bioblog, Hammer, CGS,
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