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Phosopholipid Bilayer
External surfaced lined with hydrophilic phosphate heads, and hydrophobic lipid tails.
Peripheral Proteins
Found on the inner membrane surface.
Integral Proteins
Partially or wholly embedded in the membrane.
Glycoproteins
Carbohydrate chaind attached to proteins.
Glycolipids
Carbohydrate chain attached to lipids.
Channel Proteins
Allow passage of molecules through the membrane.
Carrier Proteins
Combine with substance to be transported.
Cell Recognition Proteins
Help body recognize foreign substances.
Receptor Proteins
Binds with messenger molecule. Causes cell to respond to messages.
Enzymatic Proteins
Carry out metabolic reactions directly.
Passive Transport
Molecules follow concentration gradient.
Active Transport
Requires carrier proteins. Requires ATP.
A solution consists of?
A solvent (liquid) and a solute (dissolved solid)
Osmosis
The diffusion of water across a permeable membrane.
Osmotic Pressure
The pressure that developed due to osmosis.
Isotonic Solution
The solute and water concentrations are equal on both sides of the membrane.
Hypotonic
More water on one side of the membrane.
Hypertonic
Less water on one side of the membrane.
Exocytosis
the vesicle and plasma mebrane fuse and the contents are secreated.
Endocytosis
cell engulf substances into piuch which become vesicles.
Phagocytosis
Large, solid material go into vesicles.
Pinocytosis
Small, liquid particles go in the vesicle.
Receptor
Specific form of pinocytosis using a coated pit.
Ahesion Junction
Intercellular filaments between cells.
Tight Junction
Form impermeable barriers.
Gap Junctions
Plasma membrane channels are joined.
Extracellular Matrix
External meshwork of polysaccharides and proteins.
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