Organelles and functions
- Created by: nbainbridge1
- Created on: 25-10-17 11:09
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- Eukaryotic cell organelles
- Plasma membrane
- Boundary between cell and enviroment
- Phosphilipid bilayer
- Polar head 'water loving' hydrophillic
- Non polar 'water hating; tail hydrophobic
- Cholesterol - regulates fluidity and stabilizes structure
- Fluid mosaic - moves laterally, free to move. Pattern of proteins when viewed from above
- Nucleus
- 2 membranes contains DNA called chromatin
- Nucleoi ribosome producing centre, synthesis ribosome RNA
- Rough ER
- Flattened sacs called cisternae, the rough ER also has ribosomes attached.
- Keeps together and transport the proteins that are made
- Storage for enzymes & proteins
- Vesicles pinch off & fuse with Golgi, synthesis protein by folding
- Smooth ER
- No ribosomes hence the name smooth
- Site of steroid production
- Contains enzymes to detoxify
- Synthesis lipids
- Ribosomes
- Small, dense organelles, most of them are attached to rough ER but can also be free
- Ribosomal RNA protein, involved in protein synthesis
- Golgi body
- Vesicles added to forming face and then lost at maturing face
- 'Post office' Sorts & modifies proteins, lipids and carbs for transport out of cell
- Lysosomes
- Small vesicles contain lytic enzymes
- Supply enzymes which destroy old organelles
- Digest material taken into the cell
- 'Suicide bags' which can destroy whole cells / parts
- Mitochonrdia
- Makes ATP by aerobic respiration
- ATP diffuses around a cell and provides chemical energy to processes / organelles that require it
- Have a double membrane
- Plasma membrane
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