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"The s were acquired by a eukaryotic cell that was already a fully fledged eukaryotic cell."
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Nick Lane"Yes I do think that... [viruses] are alive, not for the obvious reasons. ...I was invited to do some filming with the BBC... it was about cells, but theyd been asked to tell a story... about the viral infection of a cell, and I said, "Well I dont know anything about viruses," and they said "No, we just want to know a little bit about early evolution," and I said, "Great, I can talk about early evolution in cells, but I cant really talk about viruses." ...[T]hey said "OK, no problem," and they flew me out to Iceland to some black sand beach that I think had been used in some science fiction movie, and they said "Right, so Nick, what can you tell us about how viruses... drove the early evolution of life?" and I said, "Oh God, guys, come on!" and they said, "No, this is a film about viruses." So I had to think quickly... What I found myself saying was that viruses were parasitic on their environment and can afford to be very simple because their environment is very rich. They live inside cells. Everything that they need is provided for them, but plants are parasitic on their environment. They still need CO2. They still need water. They still need light. ...I wouldnt hesitate to call it [parasitism] a definition of life... [L]ife as a rule is parasitic on its environment, and the level of parasitism depends on the sophistication of the environment. So in that sense viruses use the richness of their local environment to make copies of themselves and they behave with the kind of low cunning thats characteristic of life. So I think of them as alive, yes."
Nick Lane is a British biochemist and writer. He is a professor in evolutionary biochemistry at University College London. His books have won several awards.
"The s were acquired by a eukaryotic cell that was already a fully fledged eukaryotic cell."
"Thats why they [viruses] are not in the tree of life. They dont relate in a very direct way. ...[T]he tree of life now is not only about ribosomes. You can build trees from whole genomes, but viral genomes? They dont really fit in, in a way which makes sense to people."
"Mitochondria are a badly kept secret. ...There are usually hudreds or thousands of them in a single cell, where they use oxygen to burn up food. ...[O]ne billion ...would fit comfortably on a grain of sand."
"[L]ife will probably get stuck in a bacterial rut elsewhere in the universe... we might not be alone, but will almost certainly be lonely."
"According to mitochondrial gene analysis, man didnt interbreed with Homo Sapiens..."
"The possessors of... nuclei, the s, are the most important cells in the world. ...[A]ll plants and animals, all and fungi... essentially everything we can see with the naked eye, is composed of [them]..."