Endomembrane System

List adjectives to describe a membrane. Endomembrane System WHAT IS A SYSTEM? Membranes within the eukaryotic cell that work together to modify, process and ship molecules around and out of the cell. List adjectives to describe a membrane.

Endomembrane System Like a bubble Phospholipid bilayer MOSAIC Membranes within the eukaryotic cell that work together to modify, process and ship molecules around and out of the cell. MOSAIC Semipermeable FLUID

Endomembrane System All made of phospholipid bilayer Includes: Nuclear envelope Rough ER Smooth ER Transport vesicles Golgi apparatus Lysosomes Secretory vesicles

The Endomembrane System proteins transport vesicle Golgi apparatus smooth ER rough ER nuclear pore nucleus ribosome cell membrane protein secreted cytoplasm

production of mRNA from DNA in nucleus mRNA out of nucleus nuclear membrane mRNA nuclear pore production of mRNA from DNA in nucleus mRNA out of nucleus through nuclear pore

Using RNA code, a protein is synthesized on a ribosome and transported in channels of the ER.

Endoplasmic Reticulum Function processes proteins manufactures membrane Structure membrane connected to nuclear envelope & extends throughout cell accounts for 50% membranes in eukaryotic cell

Types of ER rough smooth

Protein is packaged into transport vesicles and travels to the Golgi along the cytoskeleton “track” Using RNA code, a protein is synthesized on a ribosome and transported in channels of the ER.

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Vesicle fuses with the Golgi and protein is modified as it passes through. Protein is packaged into transport vesicles and travels to the Golgi along the cytoskeleton “track” Using RNA code, a protein is synthesized on a ribosome and transported in channels of the ER.

Golgi Apparatus Function finishes, sorts, tags & ships products like “DHL shipping department” ships products in vesicles membrane sacs “DHL trucks” transport vesicles secretory vesicles Cells specialized for secretion? endocrine glands: produce hormones pituitary, pancreas, adrenal, testes, ovaries exocrine glands: produce digestive enzymes & other products pancreas, mammary glands, sweat glands

Completed protein is packaged into secretory vesicles for release from the cell or stored in vesicle or lysosome if used inside the cell. Vesicle fuses with the Golgi and protein is modified as it passes through. Protein is packaged into transport vesicles and travels to the Golgi along the cytoskeleton “track” Using RNA code, a protein is synthesized on a ribosome and transported in channels of the ER.

Vesicle transport

What has happened to the size of the membrane when a vesicle releases its protein contents to the outside of the cell? Draw a picture to illustrate.

http://www.stolaf.edu/people/giannini/flashanimat/cellstructures/endomembrane%20protein%20synthesis.swf

Inner life of cell (narrated) Inner Life of the Cell Inner life of cell (narrated)