Describe three differences between DNA (Deoxyribonucleic Acid) and RNA (Ribonucleic Acid).
DNA is double-stranded, while RNA is single-stranded. RNA contains ribose as a sugar, while DNA contains deoxyribose. Also, three of the nitrogenous bases are the same in the two types (adenine, cytosine, and guanine), but DNA contains thymine while RNA contains uracil.
First of all, there are structural differences. This is reflected in the part of the name that refers to the sugar/carbohydrate. RNA contains ribose, while DNA contains deoxyribose, a similar sugar that contains one fewer oxygen molecule (de...oxy). Another difference is that DNA is double-stranded, while RNA is a single strand. Three of the nitrogenous bases are the same in the two types (adenine, cytosine, and guanine), but DNA contains thymine while RNA contains uracil.
There are also functional differences. DNA is the blueprint for all proteins formed by the cells. mRNA takes the message to the cytoplasm, to rRNA, where tRNA brings the amino acids to string together into polypeptides--in the order that was originally dictated by the DNA.
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