Your heart then pumps it through your body to provide oxygen to the cells of your tissues and organs. As the cells use the oxygen, carbon dioxide is produced and absorbed into the blood. Your blood then carries the carbon dioxide back to your lungs, where it is removed from the body when you exhale.
DNA polymerase has 5'-3' activity. All known DNA replication systems require a free 3' hydroxyl group before synthesis can be initiated (note: the DNA template is read in 3' to 5' direction whereas a new strand is synthesized in the 5' to 3' directionâthis is often confused).
Transcription In general, transcription is the process of synthesizing a sequence of mRNA from a complementary template strand of DNA which is read from the 3' â 5' direction but synthesized in the 5' â 3'. It takes place in the nucleus of the cell in eukaryotes and the cytoplasm or nucleoid (if present) in prokaryotes.