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Protists

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Protists can be generally classed into one of three groups: Animal-like Fungus-like Plant-like Animal-like Protists Animal-like protists are those that must ingest ... – PowerPoint PPT presentation

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Title: Protists


1
Protists
2
The Protists
  • Protists are unicellular eukaryotic cells.
    (Unlike bacteria which are unicellular
    prokaryotic cells.)
  • Do you remember the differences between
    prokaryotes and eukaryotes???
  • Protists are like the junk drawer of microbiology
    there is a huge amount of diversity within this
    kingdom but they are all single-celled
    eukaryotes.
  • Protists can be generally classed into one of
    three groups
  • Animal-like
  • Fungus-like
  • Plant-like

3
Animal-like Protists
  • Animal-like protists are those that must ingest
    (eat) things from the environment around them.
  • There are four groups of animal-like protists
  • Zooflagellates
  • Amoebas
  • Ciliates
  • Sporozoans

4
Zooflagellates
  • The zooflagellates are animal like protists that
    are easily recognized by their flagella a long
    whip-like structure used to propel it through the
    water.
  • Zoo animal
  • Many zoo-flagellates can cause sickness if
    ingested in contaminated water.
  • Trypanosoma gambiensis
  • Giardia lamblia

5
Amoebas
  • Amoebas are known for their ever-changing body
    shape.
  • They use pseudopods to move and reach out to grab
    food.
  • The food is engulfed using phagocytosis.

6
Ciliates
  • The ciliates are covered in cilia. The back
    ground to this slideshow is a ciliated protist.
  • They have a rigid outer layer called the pellicle
    that maintains a stable shape (unlike the
    amoebas).
  • Paramecium

7
Sporozoans
  • Sporozoans are called such because they use
    spores as part of their reproductive cycle.
  • They are non-motile and parasitic. They need to
    be passed on from host to host and they live
    using the hosts resources.
  • Plasmodium vivax

8
MalariaThe Ugly Truth!
9
Fungus-like Protists
  • These protists are heterotrophic and most are
    decomposers that feed on dead and decaying plants
    and animals. (Hence the title fungus-like.)
  • In this subsection of protists, you will find the
    acellular slime moulds, cellular slime moulds and
    the water moulds!
  • Lets move on

10
Plant-like Protists
  • Plant-like protists contain chlorophyll and carry
    out photosynthesis. They are autotrophs.
  • You will find the euglenoids, and algae in this
    group.
  • These two groups differ from each other in a few
    ways
  • Euglenoids have the ability to be heterotrophic
    or photosynthetic while most algae are only
    photosynthetic.
  • Euglenoids have flagella, some algae do but not
    all.
  • Euglenoids a free living while some algae live in
    large colonies.

11
Euglena vs. Algae!!!
  • Euglena!
  • Diatoms!
  • Dinoflagellates!
  • Red Tide!
  • Algae!
  • Algal Bloom!
  • Stupid guy drinking algae!

12
Thats All I Got
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