A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists...

A multicellular organism is an organism that consists of more than one cell, unlike unicellular organisms. All species of animals, land plants and most...

cholera, diphtheria, and anthrax. Because microorganisms include most unicellular organisms from all three domains of life they can be extremely diverse. Two...

biological individuality, resulting in several types of organism. A unicellular organism is a microorganism such as a protist, bacterium, or archaean, composed...

(amebae) /əˈmiːbi/), often called an amoeboid, is a type of cell or unicellular organism with the ability to alter its shape, primarily by extending and retracting...

(/proʊˈkærioʊt, -ət/, less commonly spelled procaryote) is a single-cell organism whose cell lacks a nucleus and other membrane-bound organelles. The word...

some of which can reach a diameter over 30 cm (12 in). These organisms are unicellular, but they are multinucleate. Some euglenophytes, such as certain...

archaea and bacteria (unicellular organisms) that produce biomass from the oxidation of inorganic chemical compounds, these organisms are called chemoautotrophs...

derive a population of cells from a single cell. In the case of unicellular organisms such as bacteria and yeast, this process is remarkably simple and...

Eukarya or Eukaryota, organisms whose cells have a membrane-bound nucleus. All animals, plants, fungi, and many unicellular organisms are eukaryotes. They...