27 terms

Plasma Membrane& Transport

STUDY
PLAY
Extracellular fluid, Interstitial Fluid, Matrix
Fluid on the outside of a cell.
Intracellular fluid (cytoplasm)
Fluid on the inside of the cell.
Hydrophilic head of a phospholipid
loves water
Hydrophobic tail of a phospholipid
hates water
Cholesterol
Creates pores for the cell membrane.
Passive Transport
Diffusion, osmosis, facilitated diffusion
Type of energy used in Passive Transport
None
Diffusion
Movement of a substance from a HIGH to a LOW concentration
Oxygen, Water and Carbon Dioxide
Substances that diffuse across the plasma membrane
Osmosis
The diffusion of water across a membrane
Hypertonic & Hypotonic
Solutions that will cause osmosis
Hypertonic solution
Causes a cell to shrink
Hypotonic solution
Causes a cell to swell
Peripheral Proteins
On the surface of a plasma membrane
Integral proteins
Found IN the membrane and create channels
facilitated diffusion
Use of an integral protein to move a molecule from a high concentration to a low concentration across a membrane with out energy (ex. Glucose)
active transport
uses cell energy (ATP) to pull molecules from low to high concentration
bulk transport
needs energy (ATP) and is used for substances that are too large to pass through the lipid bilayer or a protein channel
2 types of bulk transport
endocytosis and exocytosis
2 Types of endocytosis
phagocytosis and pinocytosis
phagocytosis
cell eating
pinocytosis
cell takes in liquid
exocytosis
opposite of endocytosis and secretes substances out of the cell
glycoprotein
sugar chain attached to a protein
Glycoprotein function
Anchors cells/cell to cell recognition
glycolipid
carbohydrate attached to a lipid
phospholipid
a lipid that contains phosphorus and that is a structural component in cell membranes

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