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Cells and Microscopy II - Coggle Diagram
Cells and Microscopy II
Enzymes
Enzymes are biological catalysts ( large proteins ) made up of chains of amino acids folded into unique shapes
A catalyst is a substance which increases the speed of a reaction without it being changed or used up in the reaction
Optimum conditions
Temperature, if too hot the bonds breaking the enzyme break, changing the shape of the enzymes active site so the substrate won't fit in anymore.
Concentration, higher the concentration the quicker the reaction until the point where adding more enzymes make no difference as all active sites are full.
PH - If too high or low, it interferes with the bonds holding the enzymes together, changing the shape of the active site and denaturing the enzyme.
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Transport in cells
Diffusion is the spreading out of particles from an area of higher concentration to lower concentration
Osmosis is the net movement of particles across a partially permeable membrane from a region of high water potential to low water potential
Active trasnport is the movement of particles against a concentration gradient using energy transferred during respiration