The endomembrane system is a network of membranes and organelles that transport molecules within eukaryotic cells. It includes the plasma membrane, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, vesicles, and nuclear envelope. The endomembrane system divides the cell into compartments and uses the transport of vesicles to move molecules like proteins and lipids between organelles like the ER, which packages proteins, and the Golgi apparatus, which further processes and packages them for export from the cell.

1. Cell Endomembrane System
Presented by Hongbo
Reiko
Chengxu
Caitlin
Shu Hui
Wei Ying

2. Properties of endomembrane system
• present only in eukaryotic cells
• transport system for moving molecules
through interior of the cell
• made of lipid bi-layer with proteins
attached to either side or transversing
them
• divides cell into organelles

3. Parts of the endomembrane system
• Plasma Membrane
• Endoplasmic Reticulum
• Golgi Apparatus
• Lysosome
• Vacuoles
• Vesicles
• Nuclear Envelope

4. Plasma Membrane
• separates cell from outside
environment and regulates
transport of molecules and signals
into and out of the cell and
communications with other cells
• Semi-permeable
• Attachment point for the
intracellular cytoskeleton

5. Endoplasmic Reticulum:
Bio synthetic factory
• synthesis and transport organelle
which is an extension of the
nuclear envelope
• interconnected network of tubules,
vesicles, and cisternae
• responsible for protein translation,
folding and transportation of
proteins

6. Golgi Apparatus:
Shipping and Receiving Center
• packaging and delivery system for
molecules
• processes and packages molecules
synthesized by cell
• molecules primarily proteins and
lipids

7. Lysosome:
Digestive Compartments
• breaking down of macromolecules
• contains acid hydrolases
• digest worn out organelles, food
particles and viruses/bacteria

8. Vacuoles:
Diverse Maintenance
Compartments
• membrane bound compartment
• secretory, excretory and storage
function

9. Vesicles
• store, transport or digest cellular
products and waste
• basic tool for organizing
metabolism, transport, enzyme
storage and are chemical reaction
chambers

10. Nuclear envelope
• nucleus is not part of the
endomembrane system
• encloses genetic material
• nuclear pores present on surface
to regulate transport

11. Relationships among organelles of
endomembrane system
• Nuclear envelope
• Rough ER
• Smooth ER
• Vesicles
• Golgi Apparatus
• Lysosome
• Vacuoles
• Plasma Membrane