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- Hey, did you know that there is a theory that all living organisms are made up of one or more cells?
- 1839
- Theodor Schwann
- Oh yes, I think I've heard that in one of my classes in Biology. I can recall that there was a German scientist and zoologist named Theodor Schwann
- that published a theory that is connected to that, which states that “all living things are made of cells and cell products.
- But I remember that that theory started because of a German scientist and a botanist named Matthias Schleiden. He was the one who made a broad microscopic examination of plants, and discovered that it was made up of cells.
- 1838
- Matthias Schleiden
- Yes, and Theodor Schwann is the one who discovered that all animals are made up of cells. Then after having a conversation with Matthias Schleiden he published the cell theory “all living things are made of cells and cell products”.
- Based on that theory, it is discovered that all living organisms are made up of at least one cell or more.
- Unicellular
- I remember that, the living organisms that are made up of one cell are called unicellular or single celled organisms.
- Yes, an example of that is bacteria, protozoa, and archaea.
- Unicellular
- Then there’s another term for the living organisms that is made up of more than one cell, but I can’t recall.
- I think that what you’re saying is the multicellular or multi-celled organism. Animals and plants are an example of that.
- Multicellular
- Ah yeah right, I remember now.
- I can’t believe that we have a lot of knowledge about this topic.
- Yeah, I think I just recalled my whole biology class last week.
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