Drawing the Fluid Mosaic Model Membranes Membranes are?vital?structures found in all cells The?cell surface membrane?creates an enclosed space separating the internal cell environment from the exte...
Active Transport Active transport is the?movement of molecules and ions through a cell membrane from a region of lower concentration to a region of higher concentration using energy from respiratio...
Edexcel IGCSE Geography 復習筆記 2.3.1 Conflict at the Coast Conflict Between Development & Conservation Careful management of coastal regions is necessary to ensure?sustainability Coastal envi...
Passive Transport Simple diffusion Simple diffusion is a type of?transportation?that involves particles passing between phospholipids in?the plasma membrane It can be defined as: The net movement, ...
History of Fluid Mosaic Model NOS: Using models as representations of the real world; there are alternative models of membrane structure Scientists use models to represent real world ideas, organis...
Membrane Proteins The phospholipid bilayer carries out the main function of the plasma membrane - to control the movement of substances into and out of the cell The other functions are carried out ...
Amphipathic Properties Phospholipids Phospholipids form the basic structure of the membrane (the phospholipid bilayer) They are formed by a?hydrophilic?phosphate head?bonding with two?hydrophobic?h...
Interpreting Electron Micrographs Identify whether it is a?prokaryotic or eukaryotic?cell - is a?nucleus?present Identify which eukaryotic cell it is (plant or animal) by looking for a?cell wall?or...
Drawing Cells Drawing the ultrastructure of cells To record the observations seen under the microscope (or from photomicrographs taken) a labelled biological drawing is often made Biological drawin...
