ERIC LANDER: And so the issue became how does DNA replication work. And so I’m about to go into it. Now, I’m going to note we’re going to be starting this DNA goes to RNA, goes to protein, and DNA goes to itself. DNA is replicated. It makes RNA. The RNA is used to make
What is Biology? You may have learnt to classify a rose or a human as ‘living’, rock and water as ‘non- living’. But why is this so? If you say that ‘living’ is something that moves but then flowing water can be called living, right? That’s not entirely true. Life has a set of properties
Sea level seems like a pretty easy concept, right? You just measure the average level of the oceans and that’s that. But what about parts of the earth where there aren’t oceans? For example, when we say that Mt. Everest is 8850m above sea level, how do we know what sea level would be beneath
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Time travel can be complicated – and complicating, so let’s ignore all the paradoxical stuff and talk about a few simple ways that you can time travel without leaving your home. First, 1) Do nothing – you’re already traveling through time! I mean, here you are – fifteen seconds into the future since the start
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this is going to be an introduction to basic ultrasound physics remember this is not meant to be comprehensive or all-inclusive this is merely a primer as your site to learn about ultrasound for procedural guidance a few things to remember about ultrasound it is sound and it's a mechanical pressure wave it's measured in