The interesting thing is how light energy is turned into electrical energy using a single cell. It is amazing how the photoreceptors accumulate and work together to create a detailed 'picture' of the world.
the power of transduction. this is a useful mechanism that will be really useful in producing electricity. Where light shined on a protein, changes the electrical potential of a cell, making it more positive or negative. Imagine if we could make a single cell, like in the thick ascending limb cells, where there is a concentration gradient set up with the proteins, allowing a one-way movement of ions. However, this requires a high concentration of the ion outside the cell otherwise it wouldn't work... but an interesting thought!
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