These are the structural differences:
1. DNA has the sugar deoxyribose; RNA has ribose.
2. DNA has the nitrogen bases adenine, THYMINE, cytosine, guanine; RNA has adenine, URACIL, cytosine, guanine.
3. DNA is double-stranded; RNA is single-stranded.
DNA and RNA have different functions:
DNA has the genes that tell how to make the proteins. DNA stays in the nucleus, keeping the master copy of the instructions in one place.
Several kinds of RNA exist. mRNA (messenger RNA) copies or transcribes the information from the gene, goes out of the nucleus to a ribosome, and is "read" 3 bases at a time (3 bases composing a codon). tRNA (transfer RNA) has the anticodons that match mRNA's codons. The matching tRNAs bring amino acids to the growing chain of amino acids. rRNA is a component of ribosomes.
2007-02-27 19:22:39
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answer #1
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answered by ecolink 7
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Both DNA and RNA are composed of repeating units of nucleotides. Each
nucleotide consists of a sugar, a phosphate and a nucleic acid base.
The sugar in DNA is deoxyribose. The sugar in RNA is ribose, the same
as deoxyribose but with one more OH (oxygen-hydrogen atom combination
called a hydroxyl). This is the biggest difference between DNA and RNA.
Another difference is that RNA molecules can have a much greater variety
of nucleic acid bases. DNA has mostly just 4 different bases with a few
extra occasionally. The difference in these bases (between DNA and RNA)
allows RNA molecules to assume a wide variety of shapes and also many
different functions. DNA, on the other hand, serves as a set of directions
and that's about all (but that's absolutely necessary!). ---DrPam
That seems like a sweet and short answer to me....hope this helps:)
2007-02-27 19:19:46
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answer #2
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answered by butterfly_tat_luver79 3
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In terms of structure, the two are almost identical, but the DNA (deoxyribo nucleic acid) is missing an oxygen in one of the carbons (specifically, the second one). Also, the nucleotides (the basic unit of DNA and RNA) are all the same, except DNA only has adenine, while RNA only has uracil.
In terms of function, DNA genes code for RNA, and the RNA codes for the protein. So in a sense, when DNA gets express, it goes from DNA>RNA>protein/gene/polypeptide.
In terms of how they are found, DNA is usually double stranded, and there is only "one kind". However, there are different types of RNA (as in, transport RNA(tRNA), messenger RNA(mRNA), etc.), and are usually found single stranded
2007-02-27 19:23:06
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answer #3
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answered by disoneguy300 3
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DNA: Deoxyribonucleic acid. The double-stranded chemical instruction manual for everything a plant or animal does: grow, divide, even when and how to die. Very stable, has error detection and repair mechanisms. Stays in the cell nucleus. Can make good copies of itself.
RNA: Ribonucleic acid. Single-stranded where DNA is double-stranded, messenger RNA carries single pages of instructions out of the nucleus to places they're needed throughout the cell. No error detection or repair; makes flawed copies of itself. Evolves ten times faster than DNA. Transfer RNA helps translate the mRNA message into chains of amino acids in the ribosomes.
2007-02-27 19:28:00
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answer #4
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answered by Rattler 2
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Source vs. transport:
Deoxyriboneucleic acid contains the base "description" in
the cell.
riboneucleic acid is a copy, made as the cell needs it in order
to create the required proteins. That is, at any given time
there are only 2 strands of DNA (one from each parent) describing
the functionality of a gene (4 during mitosis). There may be
an number of strands of RNA during the normal operation
of the cell.
2007-02-27 19:18:26
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answer #5
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answered by Elana 7
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DNA-Deoxyribose nucleic acid.RNA-Ribose nucleic acid.
RNA has an extra oxygen molecule compared to DNA.
DNA contains Thymine as one of it's nitrogenous bases while RNA contains Uracil.
DNA is involved in controlling biochemical reactions in the cell while RNA is involved in protein synthesis.
2007-02-27 22:36:35
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answer #6
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answered by Anonymous
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DNA is deoxyriboneucleic acid and RNA is riboneucleic acid.
2007-02-27 19:18:05
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answer #7
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answered by Tanuj 1
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Search in google or wikipedia.
2007-02-27 19:18:43
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answer #8
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answered by Pooj@ 2
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No
2007-02-27 19:16:54
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answer #9
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answered by Green Man 2
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3⤋