International A Level Biology / Cell structure

Protein transport: rough ER to Golgi to the outside

Edexcel International A Level Biology (YBI11), chapter 7: Cell structure, specification point 3.4. Part of the full course.

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Proteins for export are made on ribosomes attached to the rough endoplasmic reticulum, then folded, modified and packaged before leaving the cell by exocytosis. The same route also produces lysosomes, but their enzymes stay inside the cell.

More lessons in Cell structure

• Light and electron microscopes: magnification and resolution
• Magnification calculations and units
• Core practical 5: the graticule and drawing animal cells
• The ultrastructure of an animal cell
• What each organelle does
• Recognising organelles in electron micrographs
• Prokaryotic cells
• From cells to organ systems