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Flashcards in Fluid Mosaics Deck (10):
1

Membranes are..

"Fluid mosaics"

2

What is a fluid mosaic?

proteins move within layers of fluid phospholipids

3

What is FLUID about the phospholipid bilayer?

-Phospholipid bilayer is flexible allowing for changes in the cellular shape

4

What is FLUID about membrane lipids (and some proteins?

-Membrane lipids (and some proteins) can drift laterally within the membrane

5

What is FLUID about individual phospholipid molecules?

individual phospholipid molecules are not bonded to one another

6

What is FLUID about proteins in comparison to lipids?

Proteins drift move slowly than lipids

7

What is FLUID about some membrane proteins?

some membrane proteins are tethered to the cytoskeleton and cannot move far

8

Wy are membranes called a (fluid) MOSAIC??

A mosaic of proteins is embedded into the membrane

9

Peripheral proteins

-protein is not embedded. It is attached to one surface of the membrane

-Attach only temporarily to cell membrane and sometimes attach to integral proteins

10

Integral proteins

-Protein spans the entire membrane (EX: Transmembrane)

-Permanently attached to cell membrane