QUOTE (Mithral MAge @ Sep 22 2008, 03:46 PM)

??
Maybe. I grant you a tree has billions of cells and a virus is a single cell. Virus' are highly mobile, very tough, can survive many changes to their environment, so are far tougher then pretty much any plant.
Plants, over all, are pretty simple, their highest degree of complexity is in their roots and the cells found there. Still, I think a virus cell, when compared to plant cells, are very comparable. The virus cell is far more adaptive and capable of survival then any plant cell.
Virii don't have cells though. Even a single cell (like most bacteria) is to a bustling metropolis as a virus is to a single person.
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So its really dependent on what your criteria is. Don't forget, a virus can infect millions and millions of cells in a complex organism, so from a certain perspective they can become even more complex then many plants.
If I have a million identical rocks, no individual one of those rocks is any more or less complex than another. Just because a virus happens to infect more cells and make more copies of iteslf doesn't make it any more complex.
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Don't forget, it is widely believed that a virus is the whole reason humanity is able to exist. Without it our cells would not be able to generate the energy they need to perform their functions.
So you have a virus that has a symbiotic relationship with billions (trillions?) of creatures across the planet, and is the key reason all those creatures are capable of existing. So are plants more complex then that virus?
There are over 6 billion people on the planet right now who need iron in their blood to survive, but that doesn't mean the iron itself is anything but inert metal.
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It could be argued either way. On one hand those pieces of virus are pretty independent of each other, they only need the cell they are a part of. However, they are in every living cell of every mammal, every insect, every plant, pretty much every living organism on the planet that is multi-cellular, and even many single cell organisms.
So virus' are pretty darn impressive, in there own rather unique way.
Yes, they are, but that doesn't make them anything more than an interesting collection of chemicals that happen to re-program cells they infect. The lack of moving parts, and the fact that they're nothing more than a component in a cell, which in turn is a component in a living organism, makes them simply an assortment of matter, rather than a 'living' creature.