Khan academy molecular biology5/26/2023 ![]() On the right hand side we have a nucleotide, we have a nucleotide right over there and then, actually I want to do it, let me do it slightly different. That's one nucleotide and then it's connected to another. What I am cordoning off, what I am cordoning off right over here could be considered, could be considered a nucleotide. ![]() A nucleotide, let me separate off the nucleotide. These are kind of the rungs of the ladder. This is the other side of the ladder and then each of these bridges, and I will talk about what molecules these are. You could view this side right over here as one of the, I guess you can say the backbones of one side of the ladder. What does a nucleotide look like? Well, what I have right over here is I have two strands, I've zoomed two strands of DNA or I've zoomed in two strands of DNA. It's made up of nucleo, nucleo, nucleotides. Now each DNA molecule is made up of a chain of what we call nucleotides. That's where the nucleic comes from and we'll talk about in a second why it's called an acid but I'll wait on that. DNA is just a junction for nucleic acid and it's the term nucleic that comes from the fact that it's found in the nucleus. So I'm just gonna put this on the side and now let's actually look at the molecular structure and how it relates to this actual name, deoxyribonucleic acid. I'm gonna write the different parts of the word in different colors. Let's just remind ourselves what DNA stands for. ![]() Actually get into the molecular structure of DNA. ![]() What I want to do in this video is dig a little bit deeper. We already have an overview video of DNA and I encourage you to watch that first.
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