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Describe the term pentoses

Describe the term pentoses? To what organic class do pentoses belong? Are nucleotides made of only one kind of pentose?

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Pentoses are carbohydrates made up of 5 carbons. Deoxyribose is the pentose which comprises DNA nucleotides and ribose is the pentose which is the part of RNA nucleotides.

Bacteria are prokaryotic cells, that is, they do not contain membrane-delimited nucleus. Eukaryotes contain cells with delimited nucleus. Where in such kinds of cells can DNA are found?

In eukaryotic cells, DNA is found in the cell nucleus. In prokaryotic cells, DNA is found scattered in the cytosol, the fluid space within the cell.

The other DNA molecules can also be found in chloroplasts and mitochondria, specialized organelles of the eukaryotic cells.   

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