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cellTransportOmsosi

QuestionAnswer
What is diffusion Movement of molecules from high to low concentration.
What is osmosis The diffusion of water across a membrane
What is passive transport Movement of substances through the membrane without using energy.
What is active transport Movement of materials through a cell membrane using energy.
What is equalibrium When molecules are evenly spread out and there is no net movement.
What is facilitated diffusion (passive) Use of channel/transport proteins to move large, polar molecules across the cell membrane (ex. Glucose, amino acids, WATER!)
What is a transport protein A protein that acts like a channel alowing molecules to pass through the membrane.
Hypotonic solution (passive) Water enters the cell and the cell swells and burst.
Hypertonic solution (passive) Water leaves the cell and the cell shrinks.
Isotonic solution (passive) Water moves in and out equally the cell stays the same size.
Which solutions causes osmosis to occur Hypertonic and hypotonic
What is endocytosis Into the cell Cellular eating or drinking Describes the way white blood cells ingest bacteria and foreign invaders
Selectively permebale The membrance only lets certain substances pass through.
What are cell membranes made of Phospholipids, proteins, and cholesterol.
What part of a phospholipid doesnt like water The fatty acid tails
What part of a phospholipid like water The phosphate head
SOLUTE WHAT IS BEING DISSOLVED
SOLVENT WHAT IS DOING THE DISSOLVING
AQUAPORINS The special protein channels water uses to enter and leave a cell
Sodium-Potassium Pump (active) Moves sodium ions OUT OF the cell while bringing potassium ions INTO the cell Requires energy - ions are moving from low to high concentrations Establishes MEMBRANE POTENTIAL - a cell “voltage” that allows the cell to send nerve impulses and contract muscles
Bulk Transport (active) movement of large particles (or many small particles at once) are moved across the membrane
Exocytosis Out of the cell Release of cellular wastes Release of proteins from the Golgi Apparatus
Created by: user-1879135
 

 



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