The structure
- Created by: Mooie234
- Created on: 26-11-17 16:15
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- Cell membranes are partially permeable.
- Very small molecules diffuse through.
- some substances dissolve the lipid layer and pass through.
- pass through special channel protein channels or carrier proteins
- The structure
- roles of membranes to the surface of the cell.
- separates the external environment.
- may contain enzymes involved in specific metabolic pathways.
- release chemicals that signal to other cells
- contain receptors
- site of chemical reactions
- roles of membranes within cells.
- cristae are folded to give a large surface ares
- thylakoid membranes house chlorophyll, for photosynthesis
- digestive enzymes to catalyse reactions
- the fluid mosaic model of the cell membrane
- glycolipid
- channel protein
- carrier protein
- phospholipid bilayer
- about 7nm in width
- roles of membranes to the surface of the cell.
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