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In this live Grade 12 Life Sciences show we take a look at DNA - The Code of Life. In this lesson we revise the structure of the cell with an emphasis on the ribosome, cytoplams and parts of the nucleus. We name the two types of nucleic acids as well as state where DNA is located. We describe the history of the discovery of the DNA molecule as well as describe the structure and name the three components of a DNA nucleotide. Finally, we state the functions of DNA as well as describe DNA replication.