<Dd> Kingdom Animalia--Animals </Dd> <P> Eukaryotic organisms that cannot be classified under the kingdoms Plantae, Animalia or Fungi are sometimes grouped in the kingdom Protista . </P> <P> Eukaryotes (/ juːˈkærioʊt, - ət /) are organisms whose cells have a nucleus enclosed within membranes, unlike prokaryotes (Bacteria and Archaea). Eukaryotes belong to the domain Eukaryota or Eukarya . Their name comes from the Greek εὖ (eu, "well" or "true") and κάρυον (karyon, "nut" or "kernel"). Eukaryotic cells also contain other membrane - bound organelles such as mitochondria and the Golgi apparatus, and in addition, some cells of plants and algae contain chloroplasts . Unlike unicellular archaea and bacteria, eukaryotes may also be multicellular and include organisms consisting of many cell types forming different kinds of tissue . Animals and plants are the most familiar eukaryotes . </P> <P> Eukaryotes can reproduce both asexually through mitosis and sexually through meiosis and gamete fusion . In mitosis, one cell divides to produce two genetically identical cells . In meiosis, DNA replication is followed by two rounds of cell division to produce four haploid daughter cells . These act as sex cells (gametes). Each gamete has just one set of chromosomes, each a unique mix of the corresponding pair of parental chromosomes resulting from genetic recombination during meiosis . </P>

Unlike bacteria the cell membranes of eukaryotes contain