Amoebae

Some articles on amoebae:

Arcellinida - Evolutionary History
... Fossils of arcellinid testate amoebae date back to the Cryogenian period ... Testate amoebae are theorized to be mostly polyphyletic (coming from more than one ancestral type), but testaceafilosea, one group of testate amoebae, are theorized to be made up ...
Amoeba - Genome - Osmoregulation
... Like most other protists, amoebae have a contractile vacuole ... Like most cells, amoebae are adversely affected by excessive osmotic pressure caused by extremely saline or dilute water ... Amoebae will prevent the influx of salt in saline water, resulting in a net loss of water as the cell becomes isotonic with the environment, causing the cell to shrink ...
Dictyostelium Discoideum - "Farming"
... But some of the phagocited bacteria, including some human pathogens, are able to live in the amoebae and exit without killing the cell ... discoideum, after entry into amoebae, in a phagosome the fusion with lysosomes is blocked and these unmatured phagosomes are surrounded by host cell organelles such as mitochondria, vesicles, and a multilayer ... The amoebae preserve their individuality and each amoeba has its own bacterium ...
Macrocyst
... If two amoebae of different mating types are present in a dark and wet environment, they can fuse during aggregation to form a giant cell ... through mitosis to produce many haploid amoebae that will be released to feed as normal amoebae would ...
Arcellinida
... Arcellinid testate amoebae or Arcellinida, Arcellacean or lobose testate amoebae are single-celled protists partially enclosed in a simple test (shell) ... Arcellinid testate amoebae are commonly found in soils, leaf litter, peat bogs and near/in fresh water ... Like most amoebae, they are generally believed to reproduce asexually via binary fission ...