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Short answer: Unlike the physical model you're describing above, the reality is that localisation of biomolecules in the cell isn't a passive process, instead molecules are actively concentrated where they're required to be by a variety of different mechanisms. long answer: I think possible 'missing pieces' of this picture which may help you reconcile these ...


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The presence of an organelle in a cell is strongly connected with its main function. For example in red blood cells, to have maximum space for haemoglobin and hence oxygen storage, many of the organelles are not present such as nucleus, golgi complex, lysosomes, etc. Another example can be of liver cells or muscle cells having a very high amount of ...


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