Order-No. 10216
  • Biology
  • Sek I
  • Sek II
  • BS
Year of production: 2019
Duration: 3:44 minutes

The subject of this film is bacteria. They are constantly there. We cannot survive without them, but they can also be a danger for us. And there are lots of them: ten to the power 14 bacteria live on and in our bodies, making up about 2 kg of our bodyweight. Normally we don't notice much of our busy cohabitants' goings-on. There are 500 different types of bacteria in our mouths alone. But if bacteria like streptococcus mutans reproduce there unhindered, we can get tooth decay. Bacteria are single-cell organisms. But unlike other cells, they do not have a nucleus. Their DNA is contained in the cell plasma. They reproduce through division.

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