THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Detailed explanation-1: -Whereas DNA always occurs in cells as a double-stranded helix, RNA is single-stranded. RNA chains therefore fold up into a variety of shapes, just as a polypeptide chain folds up to form the final shape of a protein (Figure 6-6).
Detailed explanation-2: -RNA is single-stranded. RNA has a backbone of phosphate and ribose sugar. The four nitrogen bases found in RNA are adenine, uracil, cytosine, and guanine are found attached to each sugar. There are different types of RNA in the cell – ribosomal RNA (rRNA), messenger RNA (mRNA), and transfer RNA (tRNA).
Detailed explanation-3: -In both prokaryotes and eukaryotes, there are three main types of RNA – messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA). These 3 types of RNA are discussed below.
Detailed explanation-4: -DNA is a double-stranded molecule that has a long chain of nucleotides. RNA is a single-stranded molecule which has a shorter chain of nucleotides.