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Hello everyone, so let's start this video.
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The question is explain the three key concepts of cell theory.
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So the number one, a cell is a basic unit of life.
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Well, there is no smaller unit of life able to reproduce, respond to stimuli, remain homeostatic, grow and develop, take in and use materials from the environment.
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In short, life has a cellular nature.
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So it was the first point and the second point was that all living things are made up of cells.
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All living things are made of cells and a human.
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Humans are multicellular.
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For example, we have different organs, we have bones and each organ is made up of cells.
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Each bone is made up of cells and each cell is different in structure and in functions.
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But the main thing is that all living things are made up of cells.
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So the third is that new cells arise only from pre -existing cells...