In living organisms, cells are diploid when they have paired chromosomes, two sets of chromosomes. One set of chromosomes each is obtained from biological parents. All the somatic cells in humans, cells other than human sex cells, are diploid. The sex cells are haploid cells. In humans, the diploid cells have 23 pairs of chromosomes, while the haploid cells (sex cells – eggs and sperms) have a single set of chromosomes.