Fluid Mosaic Model | HSC Year 11 Biology
ATAR Notes HSC・2 minutes read
The cell membrane in animals follows the fluid mosaic model, consisting of a phospholipid bilayer with hydrophilic heads and hydrophobic tails, allowing for interaction with water outside the cell. Proteins within the membrane facilitate the movement of molecules in and out of the cell, ensuring essential substances like sodium and calcium can pass through.
Insights
- Proteins in the cell membrane play a crucial role in regulating the passage of essential molecules like sodium and calcium, maintaining the cell's internal environment.
- The fluid mosaic model of the animal cell membrane, characterized by its phospholipid bilayer and dynamic nature, enables flexibility and adaptation for efficient cellular processes, distinguishing it from the rigid structure of plant cell walls.
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Recent questions
What is the fluid mosaic model?
A model of the cell membrane structure.
What do proteins do in the cell membrane?
Facilitate movement of molecules in and out.
How does the cell membrane differ from a cell wall?
Cell membrane is fluid, cell wall is rigid.
Why is the fluidity of the cell membrane important?
Allows membrane to sway and adjust for optimal function.
What is the role of the phospholipid bilayer in the cell membrane?
Provides structure and regulates passage of substances.
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Summary
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Animal Cell Membrane: Fluid Mosaic Model
- The cell membrane in animals follows the fluid mosaic model, which consists of a phospholipid bilayer with hydrophilic heads and hydrophobic tails, allowing for interaction with water outside the cell while repelling water inside.
- Proteins within the membrane facilitate the movement of molecules in and out of the cell, ensuring essential substances like sodium and calcium can pass through the membrane.
- The fluid mosaic model is named for its appearance resembling a mosaic and its fluidity, contrasting with the rigid cell wall found in plant cells, allowing the membrane to sway and adjust as needed for optimal function.
