114: Life
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Uploader Comments (5madheathens)
All Comments (6)
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At 3:44 you said that life in general is here for absolutely no purpose. But purpose is given by another subject. A great example would be : A chair has a purpose, given by an intelligent being : a human. So we can see that there are 2 subjects : The chair, and the second one is the human, which gives the chair, purpose. When we are talking about the purpose of life, people tend to attribute it to an intelligent being such as a god. But really there is no second subject to give meaning to life.
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Ah. That's miles beyond my high school level knowledge of biology.
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You are right about DNA. It requires many proteins to replicate, these consist of structural proteins and enzymes. Enzymes that unzip it, replicate both strands (differently) and then zip it up. It also requires a specific environment to be replicated in.
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Reading
What is Life? by Erwin Schrodinger (1944)
What is Life? by Ed Regis (2008)
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Ah. Thank you.
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yeah. DNA is IN cells. It's not alive on its own. You're right. RNA is not an 'older' version of DNA, though. RNA is how DNA's data is transcribed in our cells to guide the manufacture of proteins from basic amino acids. But the size of a cell isn't arbitrary, though... it was chosen by natural selection by which larger, slower variations failed, and smaller, more constrained (less versatile) variations failed as well. Don't worry, it's just statistics ^_^
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DNA is right, but I just wonder where life begins. Its good to say life starts from cells, but how do we get to cells. How do enzymes know they have to link to DNA and start transcription, so how does everything smaller than a cell has movement and in a way some form of life? The start of everything is very hard to address. Just like the big bang theory.
Sofia
5madheathens 2 years ago