Flashcards in Cell Transportation Deck (31):
This is the organelle that regulates what enters and exits the cell.
This model means the membrane is composed of many pieces, is thin and flexible...able to "flow".
Fluid Mosaic Model
Property of the membrane that makes it "picky" about what moves across...some things go easily, others not so much.
This is the main component of the cell membrane.
The heads of the bi-layer are...
The tails of the bi-layer are...
Hydrophobic tails to this to water.
repel it (fears water)
Hydrophilic heads to this to water.
attract it (loves water)
This component of the cell membrane has the function of moving materials across the membrane that cannot pass through the lipid bi-layer.
transportation PROTEINS :)
This component of the the membrane keeps the membrane fluid...prevents it from becoming a solid.
These add extra support to the inside of the membrane...helping to prevent it from caving in.
These are attached to either lipids or proteins and will act as cell identification and security.
This is "cellular velcro", it provides space between different types of cells and helps similar cells stick together.
Extracellular Matrix (ECM)
The amount of a substance in a given area
When the concentration is different on each side of the membrane.
When the concentration on both sides of the membrane is balanced
Movement across the membrane that does NOT require energy. "Go with the flow"
The movement of a substance from an area of high concentration to an area of low concentration until equilibrium is reached.
The diffusion of water
When the solutes are balanced and water will move in and out equally.
When the concentration of solutes is greater inside the cell than outside. Water will move IN.
When the concentration of solutes is greater outside the cell than inside. Water will move OUT.
Moving materials across the membrane that are either large, oddly shaped, or have a charge with the help of specialized proteins. Glucose uses this method.
Channels that usually stay open and allow materials to flow through. Water uses an aquaporin.
This is movement of materials across the membrane that requires energy...moves against the flow, no equilibrium.
Active transportation is based on this.
What the cell needs.
This form of transportation will force 3 Na+ ions out of the cell and pull 2 K+ ions in...with the help of ATP.
This is the process of bringing materials into the cell.
This is bringing in large particles, such as food. "Cellular eating"
This is bringing in liquids. "Cellular drinking"