1. What is the fundamental structure of the cell membrane?
2. What is the name of the active transport mechanism that moves 3 sodium ions out of the cell and 2 potassium ions into the cell, requiring ATP?
3. What is the primary role of diffusion and osmosis in cellular function?
Cell membrane — structure?
Phospholipid bilayer with embedded proteins.
Membrane transport — types?
Diffusion, osmosis, facilitated diffusion, active transport.
Diffusion, osmosis — difference?
Diffusion moves molecules; osmosis moves water.
Cell membrane — key components?
Phospholipid bilayer and embedded proteins.
Diffusion vs Osmosis — difference?
Diffusion: molecules; Osmosis: water movement.
Active transport — energy used?
Yes, requires cellular energy (ATP).
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