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Biology 22 Online
OpenStudy (anonymous):

whats a Ribosome

OpenStudy (anonymous):

A ribosome is an organelle that synthesises polypeptide chains, which form proteins.

OpenStudy (anonymous):

A ribosome is a cell organelle present in its cytoplasm that assembles the twenty specific amino acid molecules to form the particular protein molecule determined by the nucleotide sequence of an RNA molecule. Ribosomes are made from complexes of RNAs and proteins called ribonucleoproteins.

OpenStudy (anonymous):

ribosomes are small,dense granules which attached on d rough endoplasmic reticulum (ER) or occur freely within the cytoplasm..function: site of protein synthesis (polypeptide chain)..well that is something general..if you actually requested for more specific detail about ribosome, you can just take the answer shared by harkirat..hope this can help a little..

OpenStudy (anonymous):

As they've already said, ribosomes are organelles found in cell cytoplasm, in the cytosol or attached to the ER. their function is to translate DNA-language into protein-language thanks to the specifity of the genetic code. they assemble themselves as soon as a codifying mRNA approaches it (they are, in fact, composed by three different subunits recognisable by their specific "weight"). then they "read" the mRNA. the poliribonucleotide chain goes through them while the tRNAs corresponding to each triplet enter the active site of the ribosome and assemble into the polipeptide chain. the interesting thing is that it was previously thought that only proteins were able to act as enzimes. researchers discovered that the activity of connecting the aas into a polipeptide was due to the RNA itself. ribosomes are made of both RNAs molecules and a huge quantity of small proteins. the amazing thing was that the mRNA seems to contact the active site made ONLY of rRNA! If i don't remember wrong this discovery was worth a Nobel prize!

OpenStudy (anonymous):

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