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| 3204858244 | Essential idea | The structure of biological membranes makes them fluid and dynamic | 0 | |
| 4792656977 | Nature of science | Using models to represent the real world. Falsifying theories with one theory being superseded by another. | 1 | |
| 3204860011 | Extracellular space | Space outside of the cell the cell |  | 2 |
| 3204861465 | Phospholipid molecules | Major component of the cell. |  | 3 |
| 3204867232 | Amphiphilic | describing a chemical compound possessing both hydrophilic (water-loving, polar) and hypophobic (water-fearing) |  | 4 |
| 3204871850 | Phospholipid structure | Phosphate head (polar/ hydrophilic) Glycerol Lipophilic |fatty acid| tails (non-polar/ hydrophobic) |  | 5 |
| 3204880163 | Gorter - Grendel Model | States that cell membrane is made of a lipid bilayer |  | 6 |
| 3204884972 | Davson - Danielli Model | - A protein-lipid sandwich -Lipid bilayer composed of phospholipids (head and tail) - Protein coat outer surface - Proteins do not permeate the lipid bilayer |  | 7 |
| 3204893460 | Davson - Danielli Model's evidence | Electron micrographs membranes appeared as two dark parallel lines with a lighter coloured region in between Proteins appear dark and phospholipids appear light |  | 8 |
| 3204900896 | Falsification of Davson-Danielli model | - Fracture occurs along lines of weakness, including centre of membranes - Fracture reveals rough surface inside phospholipids bilayer - The globular structures are trans-membrane proteins |  | 9 |
| 3204909628 | Conclusion of Davson-Danielli Model | Davson Danielli's model only shows the proteins coating the surface of the membrane. A new model is needed to explain the presence of trans-membrane proteins | | 10 |
| 3204915204 | Singer-Nicholson Model | The fluid mosaic model was an updated model included with different proteins inside the lipid bilayer |  | 11 |
| 3204918922 | Fluidity | Phospholipids molecules can flow past each other laterally but cant move vertically |  | 12 |
| 4792671551 | What other elements are there to the plasma membrane? | Protein layer Globular proteins Cholesterol Glycolipid Peripheral protein |  | 13 |
| 4799395589 | Membrane proteins | Integral proteins Peripheral proteins Glycoproteins |  | 14 |
| 4799397517 | Integral proteins | Permanently embedded and many all polytopic |  | 15 |
| 4799428859 | Integral protein types | Channel proteins - passive transport Carrier protein - active transport | 16 | |
| 4799401293 | Glycoproteins | Proteins within an oligosaccharide which recognises its own cells or invader cells |  | 17 |
| 4799398021 | Peripheral proteins | Temporary association with the membrane which associates with one side of the membrane |  | 18 |
| 4799399157 | Structure of membrane proteins | Channel proteins are hydrophilic on the outside and hydrophobic in the inside | | 19 |
| 4799403635 | Acronym for Functions of membrane proteins | T R A C I E |  | 20 |
| 4799404737 | T | Transport Proteins Channels (passive movement) and proteins pumps (active (ATP)) |  | 21 |
| 4799406020 | R | Receptors It will attach to Peptide-based hormones (insulin, glucagon) |  | 22 |
| 4799407119 | A | Anchorage Provides anchorage points for extracellular matrix and cytoskeleton where cells can attach together and form tissues |  | 23 |
| 4799408643 | C | Cell Recognition MHC proteins and antigens | 24 | |
| 4799409428 | Antigens | foreign invaders |  | 25 |
| 4799409960 | I | Intracellular Joining's Joins two cells together |  | 26 |
| 4799410439 | E | Enzymatic Activity Localises Metabolic pathways through plasma membrane |  | 27 |
| 4799411313 | Cholestrol | Cholesterol is a component os animal cell membranes where it functions to maintain integrity and mechanical stability |  | 28 |
| 4799412418 | Cholesterol's function | Makes the phospholipids packed tightly together, controlling the rigidity and fluidity |  | 29 |
| 4799412940 | Cholesterol is ampithetic | Hydroxyl group is hydrophilic(OH) Rest of cholesterol is hydrophobic |  | 30 |
| 4799414597 | How does Cholesterol control the rigidity and fluidity | Cholesterol interacts with fatty acids tails of phospholipids to moderate the properties of the membrane |  | 31 |
| 4799416284 | How else does it reduce rigidity and fluidity in membranes | - Immobilises the outer surface, reducing fluidity - Separates the phospholipid tails and so prevents crystallisation of the membrane |  | 32 |
| 4799419766 | Skill: drawing Fluid mosaic model | Phospholipid layer - Phosphate head (hydrophobic region) - Fatty acid tail (hydrophilic region) Monotopic peripheral protein Integral proteins - carrier protein - channel protein Glycoprotein - oligosaccharide Cholesterol |  | 33 |
