When I was a kid, my parents told me that everyday items are always filled with bacteria, such as banknotes, tabletops, keyboards, smartphones, floor (pick up your fallen food within 5 seconds or it will be infected with bacteria), I grew up told there are millions of bacteria under the fingernails all the time, is this really true? How can they be always there and survive that long if they are on the floor, banknotes etc.? They are living organisms, need to eat something, right? For my thinking there is nothing to eat on the banknotes normally. Can anyone bust this myth or confirm? Thanks in advance.
In: Biology
Your body right now has 30 trillion human cells in it, and 38 trillion bacterial cells. The human portion comprises more than 97% of your total weight. This illustrates how small bacteria are compared even to other living cells, and how you can have millions and not even detect them. As far as needing energy, they are not warm blooded, and do not need much energy to just sit around waiting for the next food source to become available, nor much of it.
Latest Answers