membrane structure and function

Eukaryotic membranes

3 main components of membranes :

Lipids

Proteins

Carbohydrates ​

Membrane proteins

Transporter proteins - can work in both directions, slow, reversible change, uses facilitated diffusion and active transport

Transmembrane transport proteins - extend across he entire phospholipid bilayer. 2 main types : Chanel proteins and carier proteins

• Chanel proteins - substances move own their electrochemical gradient through the channel, no ATP

• Carrier protein - bind to a specific substance which causes te protein to hanger shape and release the substance on te opposite side of the membrane

Proteins can also be receptors, enabling communication from outside to inside of a cell or organelle ​

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