What is the function of
the cell membrane?
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Function of the Cell Membrane: Diffusion, Osmosis, and Active Transport, Study Guides, Projects, Research of Cell Biology
The role of the cell membrane in the processes of diffusion, osmosis, and active transport. It covers the concepts of concentration gradient, facilitated diffusion, and active transport using ions as examples. The document also discusses the effects of hypertonic, hypotonic, and isotonic solutions on cells.
What you will learn
- How does the cell membrane facilitate diffusion and osmosis?
- What is the role of ATP in active transport?
- How does the cell maintain its internal balance of ions?
- What happens when a cell is placed in a hypertonic solution?
- What is the difference between passive and active transport?
Typology: Study Guides, Projects, Research
2021/2022
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What is the function of
the cell membrane?
- DIFFUSION: The movement of molecules from an area of high concentration to an area of lower concentration.
- All molecules are always in motion.
Concentration Gradient: The difference between the 2 concentrations of molecules.
- Molecules bump into each other as they move.
- Eventually, the molecules will be evenly spread out.
- Equilibrium: When there is an even concentration of molecules. DIFFUSION STOPS WHEN EQUILIBRIUM IS REACHED.
In which cell is diffusion occurring?
What will happen?
3. Osmosis: The diffusion of
water from high water concentration to low water concentration.
- Hypertonic: Having a higher solute concentration. - (But a lower water concentration)
- Hypotonic: Having a lower solute concentration. - But a higher water concentration.