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active and passive transport in cells. Here's a general explanation of the concepts, which might help you understand the worksheet:
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🔬 Passive Transport
-
No energy required (ATP).
- Moves substances
down their concentration gradient (from high to low concentration).
- Types:
1.
Simple Diffusion: Molecules move directly through the membrane (e.g., O₂, CO₂).
2.
Facilitated Diffusion: Uses carrier proteins or channels (e.g., glucose via GLUT proteins).
3.
Osmosis: Movement of water across a semi-permeable membrane.
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⚡ Active Transport
-
Requires energy (ATP).
- Moves substances
against their concentration gradient (from low to high concentration).
- Examples:
-
Sodium-Potassium Pump (Na⁺/K⁺ pump): Pumps 3 Na⁺ out and 2 K⁺ into the cell.
-
Endocytosis & Exocytosis: Bulk transport using vesicles.
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🧪 Common Questions on Such Worksheets:
1.
Identify whether a process is active or passive based on direction of movement and energy use.
2.
Label diagrams showing diffusion, osmosis, or pumps.
3.
Match terms like "carrier protein," "channel protein," "ATP," etc., to processes.
4.
Explain what happens in hypertonic, hypotonic, or isotonic solutions.
5.
Compare and contrast types of transport.
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Parent Tip: Review the logic above to help your child master the concept of passive and active transport worksheet.
