How does UV light sanitize surfaces?
In: Chemistry
The same way it can cause us cancer – it mutates DNA.
In humans we have a LOT of DNA and a lot of cells, so if DNA gets mutated in a cell and not repaired, it’s unlikely to kill us – it’s probably not going to be in an important region of our genome and even if it is if we need to we could destroy the cell and have plenty of others to take over for it.
Bacteria have less DNA and are unicellular, so a mutation is more likely to be lethal
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