Lab Bench Diffusion Osmosis
Two petri dishes one containing agar or gelatin the other with water clock to keep time metric rulers dye or food coloring 1.
Lab bench diffusion osmosis. Diffusion is the random movement of molecules from an area of higher concentration to areas of lower concentration. Understand the functional role of the cell membrane in cell survival. They attain this equalizing effect by spreading and transporting nutrients water and other necessary chemicals from the areas of higher concentration to areas of lower concentration inside a body.
Diffusion is one result of this molecular movement. This diffusion of water is called osmosis. The processes of diffusion and osmosis account for much of the passive movement of molecules at the cellular level.
Demo and lab activities to help students experience diffusion and osmosis first hand. Osmosis continue reading lab 1 osmosis. Each cell contains several structures some of which are common to both eukaryotic and prokaryotic cells and some that are unique to specific cell types.
The basic building block of life is the cell. In this lab you will explore the processes of diffusion and osmosis. Start studying ap bio lab bench 1.
Obtain two petri dishes one empty and one with agar. A number of factors can affect the rate of diffusion including temperature molecular weight concentration gradient electrical charge and distance. In the following laboratory you will observe the process of diffusion and osmosis across cell membranes using different experiments.
Water can also move by the same mechanism. Active transport of sodium ions across the cell membrane. Understand the basic mechanisms by which biological molecules and water are transported within a living organism.
Both the processes diffusion and osmosis work in the companionship of each other inside of living organisms in order to attain the equalizing effect. Learn vocabulary terms and more with flashcards games and other study tools. Demonstration of diffusion you will need.
This causes the molecules of the cell to move around and bump into each other. Lab 1 osmosis diffusion osmosis lab introduction. Paul andersen starts with a brief description of diffusion and osmosis.
He then describes the diffusion demonstration and how molecules move over time. By theresa knapp holtzclaw. Cells have kinetic energy.
In this laboratory you will study some of the basic principles of molecular movement in solution and perform a series of activities to investigate these processes. Diffusion and osmosis lab 2 part 1.
