(OLD VIDEO) Why RNA is Just as Cool as DNA

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Captioning is on. To turn off, click the CC button at bottom right. Follow the amoebas on Twitter (@amoebasisters) and Facebook! Sometimes it feels like DNA gets all the credit. Yes. DNA is very important; it codes for your traits. However, sometimes what gets left out is how important RNA is. Without RNA, you actually couldn’t get that genetic message out to your cells so that they can start producing proteins. RNA is a very important biomolecule – just as important as DNA. What we’re going to do right now is compare and contrast RNA with DNA. This is really important to understand because if you don’t understand it, you can’t understand protein synthesis. Protein synthesis is the process that gets your DNA to code for the proteins that make up so many of your traits. Let’s talk about DNA and RNA. They both sound kind of similar and actually they are both nucleic acids, which are a type of biomolecule. Let’s go ahead and compare and contrast them real quickly. So DNA stands for deoxyribose nucleic acid. The “deoxyribose” is a sugar, and “nucleic acid” is the type of biomolecule it is. DNA is also double-stranded, which means it has two strands, and it’s in a double helix shape, also known as a twisted ladder. We also have mentioned the bases in DNA. Remember the bases are really important because they actually code for your traits. So the bases are adenine, thymine, cytosine, and guanine. It helps to remember the little mneumonic device: apples in the tree (that helps you remember that A goes with T) and car in the garage (so C goes with G). Also, DNA is found in the nucleus. Those are all things about DNA. RNA, on the other hand, stands for ribonucleic acid. The “ribo” is actually part of ribose, which is a sugar. Just like DNA has “deoxyribose,” RNA has “ribose.” They both contain a sugar. RNA also has four bases. Remember in the DNA, they were A and T, C and G. Well in RNA, you have all the same bases except for one: there is no T, otherwise known as thymine. There is no T in RNA. Instead, it’s a U. The U is for uracil. So you can’t remember “Apples in the Tree” for RNA; it’s not going to work because there is no T. Instead, try remembering “Apples Under” so it’s kind of like the apples are under a tree. A for adenine, and U for uracil; they go together. Also, there’s still C and G; remember, cars in the garage. That helps you remember cytosine goes with guanine. So the bases are pretty similar for RNA except for the uracil instead of thymine. RNA also will start out in the nucleus, but it’s going to travel out of the nucleus. It’s going to help deliver the message. There are actually three types of RNA. Don’t worry; what they stand for really gives away what they do. Let me give you an example. The first type of RNA is messenger RNA, and the abbreviation is mRNA for messenger RNA. mRNA’s job is to carry a message based off of the DNA. Second type of RNA is called the transfer RNA or abbreviated tRNA. Its job is to transfer the message. Then we have rRNA and that stands for ribosomal RNA. Kind of like it sounds, it actually is a component of the ribosome. If you remember back in cells, we talked about how ribosomes make protein. It’s very important in protein synthesis. Obviously, ribosomes are going to be involved because that’s what we’re doing – we’re making protein. Now that you know the difference between RNA and DNA, you’re completely ready to explore the concept of protein synthesis. We have another clip on that fascinating process. That’s it for the Amoeba Sisters, and we remind you to stay curious!
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Views: 1,278,382
Rating: 4.7926054 out of 5
Keywords: DNA, RNA, compare and contrast, difference between rna and dna, compare rna and dna, protein synthesis, three types of RNA, messenger rna, mrna, transfer rna, trna, ribosomal rna, rrna, ribosomes, deoxyribose nucleic acid, monomer, nucleic acid, purpose of rna, importance of rna, purpose of dna, bases, importance of dna
Id: 0Elo-zX1k8M
Channel Id: undefined
Length: 4min 43sec (283 seconds)
Published: Thu Jan 16 2014
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