• Develop Some Hypotheses Explaining why Only Eukaryotic Cells have Evolved into Multi-Cellular Organisms

     

    Эссе2 Биология

Оценка:
Опубликованно: 28.04.2005.
Язык: Английский
Уровень: Средняя школа
Литературный список: Нет
Ссылки: Не использованы
  • Эссе 'Develop Some Hypotheses Explaining why Only Eukaryotic Cells have Evolved into M', 1.
  • Эссе 'Develop Some Hypotheses Explaining why Only Eukaryotic Cells have Evolved into M', 2.
Фрагмент работы

Prokaryotic cells are structurally simple. They are found only in single-celled and colonial organisms. Eukaryotic cells have organelles with their own membranes. Single-celled eukaryotic organisms are very diverse, but many colonial and multicellular forms also exist. The first of eukaryotic cells probably evolved or split off from Archeans, which have attributes of both prokaryotes (oxygen haters, e.g. bacteria), but also contain genes that are more like what you'd find in eukaryotes (oxygen lovers e.g. plants and animals). The first eukaryote cells probably lived near oxygen producing stromatolites. …

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