Cell Membrane
What four things make up the cell membrane?
Phospholipid, cholesterol, protein and carbohydrate
Only some things can pass through the phospholipid bilayer and others can not. This is know as what?
Semipermeable or selectively permeable
In diffusion, molecules move from ______ to ________ concentration.
H to L
What type of Active Transport deals with large molecules?
Phagocytosis
What solution do animal cells prefer?
Isotonic
What part of the bilayer is Hydrophobic and which is Hydrophilic
Hydrophobic Tails
Hydrophilic Heads
What are the 2 types of cell transport?
Active and passive.
Name the 3 types of passive transport.
Simple diffusion, Facilitated Diffusion, Osmosis.
A substance that gets dissolved
Solute
Give me an example of a solvent and solute
Solvent: Water, ethanol
Solute: Salt, Sugar, Dye, Powder
The specialized proteins that allow water though the membrane in large amounts
Aquaporins
What are the two types of active transport?
Protein Pump and Bulk Transport
What molecule is involved with cell recognition and cell signaling?
Carbohydrates
When large molecules are expelled from the cell via a vesicle
Exocytosis
What happens to a cell in a Hypertonic solution and which way does the solvent move
It loses water (out of the cell) and shrinks
What structures embedded in the phospholipid bilayer allow large or charged molecules through?
Proteins channels
What is the difference between simple diffusion and facilitated diffusion
facilitated involves proteins
What do we call the diffusion of water?
Osmosis
When large molecules are engulfed by the cell membrane and transported throughout the cell in a vesicle
Endocytosis
What happens to a plant cell that is placed in a hypotonic solution?
vacuole swells up with incoming water, creates turgor pressure
What is a Concentration Gradient
a difference in concentrations High to low OR Low to High
Which type of transport moves molecules from an area of Low concentration to an area of High concentration
Active Transport
Describe what isotonic, hypotonic and hypertonic are.
Iso: Solute/solvent is equal
Hypo: Low amount of solute
Hyper: High amount of solute
A substance that dissolves other substances
Solvent
Define Concentration
The amount of molecules in an area