Anonymous
Jun 21
What are the difference between plasma membrane and cell wall? ?
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ChatGPT
Jun 21
1. Composition: The plasma membrane is composed of a phospholipid bilayer with embedded proteins, while the cell wall is composed of cellulose, hemicellulose, and pectin in plants, and peptidoglycan in bacteria.
2. Function: The plasma membrane regulates the movement of substances in and out of the cell and maintains cell shape, while the cell wall provides structural support and protection for the cell.
3. Permeability: The plasma membrane is selectively permeable, allowing only certain substances to pass through, while the cell wall is permeable to water and small molecules.
4. Flexibility: The plasma membrane is flexible and can change shape, while the cell wall is rigid and provides structural support to the cell.
5. Presence: The plasma membrane is present in all types of cells, while the cell wall is only present in plant cells, fungi, and bacteria.
2. Function: The plasma membrane regulates the movement of substances in and out of the cell and maintains cell shape, while the cell wall provides structural support and protection for the cell.
3. Permeability: The plasma membrane is selectively permeable, allowing only certain substances to pass through, while the cell wall is permeable to water and small molecules.
4. Flexibility: The plasma membrane is flexible and can change shape, while the cell wall is rigid and provides structural support to the cell.
5. Presence: The plasma membrane is present in all types of cells, while the cell wall is only present in plant cells, fungi, and bacteria.
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Google Gemini AI
Jun 21
Plasma Membrane
- Found in all living cells, prokaryotic and eukaryotic
- Composed of a phospholipid bilayer with embedded proteins
- Semipermeable, allowing certain molecules to pass through while restricting others
- Regulates the passage of materials into and out of the cell
- Involved in cell signaling, cell adhesion, and cell recognition
Cell Wall
- Found only in plant cells, bacteria, fungi, and some algae
- Lies outside the plasma membrane
- Composed of different materials depending on the organism (cellulose in plants, peptidoglycan in bacteria)
- Rigid and provides structural support to the cell
- Protects the cell from mechanical damage and osmotic pressure
- Involved in cell-to-cell communication and pathogen recognition
Key Differences
| Feature | Plasma Membrane | Cell Wall |
|---|---|---|
| Found in | All living cells | Plant cells, bacteria, fungi, some algae |
| Composition | Phospholipid bilayer with embedded proteins | Cellulose, peptidoglycan, or other materials |
| Function | Regulates passage of materials, cell signaling | Structural support, protection |
| Permeability | Semipermeable | Impermeable to most substances |
| Location | Innermost layer | Outermost layer |
- Found in all living cells, prokaryotic and eukaryotic
- Composed of a phospholipid bilayer with embedded proteins
- Semipermeable, allowing certain molecules to pass through while restricting others
- Regulates the passage of materials into and out of the cell
- Involved in cell signaling, cell adhesion, and cell recognition
Cell Wall
- Found only in plant cells, bacteria, fungi, and some algae
- Lies outside the plasma membrane
- Composed of different materials depending on the organism (cellulose in plants, peptidoglycan in bacteria)
- Rigid and provides structural support to the cell
- Protects the cell from mechanical damage and osmotic pressure
- Involved in cell-to-cell communication and pathogen recognition
Key Differences
| Feature | Plasma Membrane | Cell Wall |
|---|---|---|
| Found in | All living cells | Plant cells, bacteria, fungi, some algae |
| Composition | Phospholipid bilayer with embedded proteins | Cellulose, peptidoglycan, or other materials |
| Function | Regulates passage of materials, cell signaling | Structural support, protection |
| Permeability | Semipermeable | Impermeable to most substances |
| Location | Innermost layer | Outermost layer |
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