Bacteria Bacteria and Protists and Protists Ms. Dunn Ms. Dunn Forestbrook Middle Forestbrook Middle Academic Standard 7-2.3 Compare the body shapes of bacteria (spiral, coccus, and bacillus) and the body structures that protists (euglena, paramecium, amoeba) use for food gathering and locomotion.
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Bacteria and Protists Ms. Dunn Forestbrook Middle Academic Standard 7-2.3 Compare the body shapes of bacteria (spiral, coccus, and bacillus) and the body.
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How do we know they exist?How do we know they exist?We tapped their phone lines!!!We tapped their phone lines!!!
science and bacteria (scientists).asxscience and bacteria (scientists).asxOkay, so we might need them for oil!Okay, so we might need them for oil!
Why don’t we destroy them?Why don’t we destroy them?Intro to Bacteria.asxIntro to Bacteria.asx
ProtistsProtists Protists are organisms that are Protists are organisms that are
classified into the kingdom classified into the kingdom ProtistaProtista. .
There is a lot of variety within There is a lot of variety within the protists, they do share some the protists, they do share some common characteristics. common characteristics.
All protists:All protists:
•Have a nucleus with a Have a nucleus with a nuclear membranenuclear membrane•Are usually one-celledAre usually one-celled•Live in moist environments Live in moist environments
Protists are grouped by Protists are grouped by the way they the way they movemove and and
AmoebaAmoeba EuglenaEuglena- - Have a flagellaHave a flagella Move by pulling themselves with Move by pulling themselves with
their flagellatheir flagella characteristics of both plant and characteristics of both plant and
animal; contains chloroplasts that animal; contains chloroplasts that photosynthesize and can consume photosynthesize and can consume other organisms.other organisms.euglena 43 euglena 43
sec.asxsec.asx
2. 2. Protists with CiliaProtists with Cilia (ex. (ex. Paramecium)Paramecium)
Move by beating (flapping) Move by beating (flapping) tiny hair-like structures tiny hair-like structures called called ciliacilia
Cilia act as tiny oars that Cilia act as tiny oars that allow the protist to move allow the protist to move through its watery through its watery environment.environment.
Cilia also beat and help to Cilia also beat and help to capture foodcapture food
3. 3. Protists with PseudopodsProtists with Pseudopods (ex. (ex. amoeba)amoeba)
Move by extending part of their Move by extending part of their bodies forward and then pulling bodies forward and then pulling the rest of their bodies forwardthe rest of their bodies forward
Pseudopods- (false feet) finger-Pseudopods- (false feet) finger-like structures that they project like structures that they project forwardforward
also used to trap foodalso used to trap food
Observe how they move…Observe how they move…
The Protist (7 min.clip)The Protist (7 min.clip) video clips\The Protists 7 min.asxvideo clips\The Protists 7 min.asx
Movement of ProtazoaMovement of Protazoa movement of protazoa 1 min 31.asxmovement of protazoa 1 min 31.asx