Section 1 Transport of ions and Molecules through the Cel Membrane
7 Section 1 Transport of Ions and Molecules through the Cell Membrane
I Review Structure of the cell membrane
8 I Review Structure of the Cell Membrane
What do membranes do? Act as a barrier and Membranes are active Receive information D ynamic Import/export molecules Move/ expand 1 receivin information 3 capacity for movement and expansion 2 import and export of molecules
9 What do membranes do? ➢ Act as a barrier AND… ➢ Receive information ➢ Import/export molecules ➢ Move/expand Membranes are Active Dynamic !
The cell membrane system lasma ··。0。0 molecules internal membrane membrane enclosing out side .Enclosing an nucleus peroxisome ell · intracellular endoplasmic lysosome compartmentreticulum 0● molecules molecules ●0 inside the ;";: 。 intracellular ● compartment (B) Golgi vesicle apparatus plasma mitochondrion membrane >Membranes surrounding the cell >Membrane systems inside the cell >The nucleus, endoplasmic reticulum, golgi apparatus, Em0 somes(内小体) and lysosomes form the endomembrane system
10 The Cell Membrane System ➢Membranes surrounding the cell ➢Membrane systems inside the cell ➢The nucleus, endoplasmic reticulum, golgi apparatus, Endosomes (内小体）and lysosomes form the endomembrane system
Composition of the cell membrane > Protein 55% Q > Phospholipids 25% lipid bila Cholesterol 13% (5nm) Other lipids 4% Carbohydrates 3% ipid molecule protein molecule
11 Composition of the cell membrane ➢ Protein 55% ➢ Phospholipids 25% ➢ Cholesterol 13% ➢ Other lipids 4% ➢ Carbohydrates 3%