ch 5 membranes

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What are the 4 components of the cellular membrane
- 1.phospholipid bilayer
- 2.transmembrane proteins
- 3.interior protein network
- 4.cell surface markers
what does the phospholipid structure consist of
- Glycerol
- Fatty Acids
- Phosphate Group
What is Glycerol

a 3-carbon polyacohol acting as a backbone for the phoshpholipid
what are the 2-fatty acids attatched to

glycerol
the fatty acids that are nonpolar chains of carbon nd hydrogen their nopolar natures makes them---

hydrophobic
the fatty acids are

Hydrophobic
the phosphate group is

hydrophilic
what forms the bilayer in membrame

partially hydrophilic and partially hydrophobic phosopholipid
which bonding holds the two phospholipid bilaryers together this shows that Phospholipid bilayers are
- Hydrogen bonds
- Fluid
name about 5 functions of membrane protiens
- transporters
- enzymes
- cell surface receptors
- cell surface identity markers
- abhesion protiens
- attatchment to cytoskeleton
movement of molecules from high concentration to low concentration is called

Diffusion
What is Passive Transport
what do molecules move to in response of
- Movement of molecules through the membrane in which no energy is required.
- Concentration gradient
What is selective permeability

membrane protiens allow the cell to be selective about what passes through the membrane
What has a polar interior allowing polar molecules to pass through

Channel Protiens
What is a carrior protien and what does it do

carrior protien bind to a specific molecule to facilitate its passage
what are Ion Channels and Gated channels
- Ion-allow ions to go through that are associated with water
- Gated-opened or closed in resposne to a stimulus
Facilitated Diffiusion

is movement of a molecule from high to low concentration with the help of a carrior protein
what is a solvent

water or the material that is doing the dissolving
what is the solutes
what is a solute and solvant
- substance that is doing the dissolving
- Solution
what is osmosis

movement of water from an area of high to low concentration of water or moevement of water toared area of HIGH SOLUTE CONCENTRATION
which is higher level of concentrant vs lower

hypertonic hypotonic
explain what happens with plant cells and redblood cells in differient solutions

look in book dont feel like typing it XD
name 3 ways to determain osmotic balance
- Extrusion
- Isosmotic Regulation
- Turgor presure
whater is ejected through conctratile vacules is called

extrusion
involves keeping cells isotonic with their environment

Isosmotic Regulation
plant us to push the cell membrane against the cell wall adn keep the cell rigid

Turgor pressure
In bulk transports which term indicates movements of substance INTO
and OUT
- exocytosis
- endocytosis
what occures when the plasma membrane envelope food particles adn liquids. discribe proceedure
- Phagocytosis=eats particular matter
- Pinocytosis-takes in only fluid
- receptor Mediated Endocytosis- particular molecules are taken in after they bind to receptor
Will you Fail the Exaim and loose everything

No

Author

i-love-tinkerbell

66205

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ch 5 membranes

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ch 5 membranes

Updated

2011-02-14T05:09:45Z

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