Biology ultrastructure of cells 1
- Created by: Abby1907
- Created on: 13-03-14 16:08
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- Ultrastructure of cells
- Nucleus
- Largest organelle
- Surrounded by double membrane
- Contains pores
- Contains chromosomes
- Dispersed into diffuse network called chromatin
- Only become visible when cell divides
- One or more nucleoli
- Nucleolus is a tiny, highly stainable body
- Makes ribosomes
- Mitochondria
- Usually rod-shaped
- Quite large
- Surrounded by double membrane
- Outer membrane - smooth
- Inner membrane - highly folded
- To form CRISTAE
- Interior of mitochondrian is watery solution of metabolites + enzymes
- Called MATRIX
- Ribsomes
- Minute structures
- No membrane
- Made of protein and RNA
- Sites of protein synthesis
- Cell components + enzymes made here
- Endoplasmic Reticulum
- Rough
- Ribsomes attached
- Site of synthesis of proteins
- Vesicles formed at end
- Become picked off
- Vesicles package products for transport
- Ribsomes attached
- Smooth
- No ribosomes
- Synthesises substances needed by cells
- Folded membranes
- Rough
- Nucleus
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