Can you explain what is meant by the 5' and 3' ends of the nucleotide in DNA structure?

The 5' and 3' ends of a nucleotide in DNA refer to the specific positions on the sugar molecule within the nucleotide. The 5' end has a phosphate group attached to the 5th carbon atom of the sugar, while the 3' end has a hydroxyl group attached to the 3rd carbon atom. These ends are important for the directionality of DNA strands during replication and transcription processes.