DNA remains in the nucleus. mRNA can travel in and out of the nucleus. Explain how the function of DNA and mRNA differs.
Any information helps.
thanks
2007-01-16 08:50:54 · 4 answers · asked by z1 2 in Science & Mathematics ➔ Biology
DNA is basically the hard copy. It is double stranded and found in every cell. It contains a library of EVERY single protein that the body makes. Cells supress bits of the DNA because every protein does not apply to every cell.
mRNA is the portable version that is taaken away from the hard copy to make the actual protein. It is single stranded and codes for 1 protein (although in bacteria one mRNA can code for many proteins). It is the actual bit that gets TRANSCRIBED in the nucleas (copied) and TRANSLATED (written) into proteins in the cytoplasm on ribosomes (which are incidently another form of RNA...rRNA).
DNA functions include getting copied to every daughter cell too (thats why it is double stranded for semi conservative copying).
2007-01-16 08:58:06 · answer #1 · answered by Mubz 4 · 3⤊ 0⤋
Transcription is the process through which a DNA sequence is enzymatically copied by an RNA polymerase to produce a complementary RNA. Or, in other words, the transfer of genetic information from DNA into RNA. In the case of protein-encoding DNA, transcription is the beginning of the process that ultimately leads to the translation of the genetic code (via the mRNA intermediate) into a functional peptide or protein. Transcription has some proofreading mechanisms, but they are fewer and less effective than the controls for DNA; therefore, transcription has a lower copying fidelity than DNA replication.
Like DNA replication, transcription proceeds in the 5' → 3' direction (ie the old polymer is read in the 3' → 5' direction and the new, complementary fragments are generated in the 5' → 3' direction). Transcription is divided into 3 stages: initiation, elongation and termination.
2007-01-16 08:59:28 · answer #2 · answered by Monika S 6 · 0⤊ 0⤋
The information in DNA codes for all the proteins your body needs to function. You can think of DNA as being an archive of all this information. Any time a cell needs to make a new protein, it goes to the DNA, copies a particular sequence to an RNA molecule, then uses the information in the RNA to construct the protein.
2007-01-16 09:01:08 · answer #3 · answered by OMGWTFBBQ!!1 3 · 0⤊ 0⤋
DNA = "coding system" of a cell. Stores info.
mRNA (Messenger RNA) = Carries informaion to and from proteins and various parts of the cell. hence the 'messenger' part.
2007-01-16 09:00:16 · answer #4 · answered by constantsugarhigh7 3 · 0⤊ 0⤋