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Across 4. Site of lipid metabolism 5. Magnification is the _____ size divided by the actual size 8. May be bound to ER or free 9. Dark-staining material in the nucleus 11. The E in ER 13. The E in EM 15. Made of microtubules and microfilaments 16. Where proteins are processed and packaged for export 20. Organelle only found in the green parts of plants 22. Convenient unit for measuring intracellular structures 24. Type of microscope with a maximum magnification of 1500x 25. Where ribosomes are assembled 26. Carries out intracellular digestion 28. Molecule in cell walls 29. Prefix to 'desmata' 30. The ER where secretory proteins are synthesised

Down 1. Its structure is known as the fluid mosaic model 2. Term for a small membrane-enclosed sac 3. The type of EM that shows structures in 3D 6. Site of aerobic respiration 7. Molecule forming the basis of all membranes 10. Sometimes found in a 9 + 2 arrangement 12. Smallest distance between two points that allows them to be seen as separate 14. Infolding of bacterial plasma membrane 17. Organelle which propels a cell forwards 18. Stack of membranes in a chloroplast 19. Large organelle containing sap in plant cells 20. In pairs at right angles to each other 21. Name for the vacuole membrane 23. Organelle which sweeps material past a cell 25. Surrounded by an envelope 27. Helps bacteria stick together