Protists - SciencePLC

Report
Video Introduction
Kingdom Protista – The Protists
Watch the following video on Discovery Education:
http://player.discoveryeducation.com/index.cfm?guidAs
setId=3D84751E-23C5-4538-9090-2725EE7B64D6
Set up Cornell Notes – p. ?
Topic - Protists
Definition
Protists:
(pro-tist)
Eukaryote:
(you-care-ee-oats)
Euglena:____________________________
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(Draw and Label)
Amoeba: _________________________________
_________________________________________
_________________________________________
(Draw and Label)
Paramecium: ________________________
____________________________________
____________________________________
(Draw and Label)
Volvox: __________________________________
_________________________________________
_________________________________________
(Draw and Label)
All Protists are Eukaryotes
 Eukaryotes are organisms that have cells with a distinct
membrane-bound nucleus and organelles.
 Most unicellular protists are microscopic, however, some
multicellular protists grow more than 60 meters in a year.
 Today we will be discussing unicellular protists.
Definitions:
Protist: (pro-tist) Unicellular, multicellular or organisms in a colony with diverse nutritional and reproductive means.
Eukaryotes: (you-care-ee-oats) Organisms that have cells with distinct membrane around nucleus and organelles.
Euglena
 Euglena (you-glee-nuh) is a unicellular protist with characteristics of both
plants and animals.
 It moves freely and feeds on other organisms, like an animal.
 Has the ability to make its own food, like a plant.
 Contains chloroplasts which are organelles that store chlorophyll and is
a site to perform photosynthesis.
 Chloroplasts: (clor-oh-plasts) cell organelles in the Euglena
 Chlorophyll: (clor-oh-fil) green pigment that captures energy for
photosynthesis from the sun.
 Photosynthesis: (fo-toe-sin-tha-sis) process which organisms use
light energy to join carbon dioxide and water to make nutrients.
Euglena: a unicellular protist with a reddish eyespot and a single
flagellum, found in stagnant waters.
Euglena Diagram
Chloroplasts (with chlorophyll)
Nucleus
Flagellum
Contractile
vacuole
Eyespot
Amoeba
 An Amoeba (uh-mee-buh) is a unicellular
protist
 Animal-like because they feed on other
organisms and are able to move freely.
 Feeds and moves by using structures called
pseudopods. (false feet)
 Surrounds another protist and takes it into
its cytoplasm and digests it.
Amoeba: a unicellular protist which is able to change shape
because of the movements of pseudopods. They live in fresh
water or soil or as parasites in man and animals.
Amoeba
Paramecium
 Paramecium (pair-uh-mee-see-um) is unicellular protist found in
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ponds and slow moving streams.
This cell is covered with cilia, which are tiny hairs and are used for
movement.
Feeds through its oral groove as it moves through water. Eats bacteria,
algae, and other small organisms.
Could be described as animal-like because of how it feeds and moves.
Excess water is pumped out of the cell by the contractile vacuole to
prevent the cell from bursting.
Has 2 nuclei; one needed for cell processes, the other is used only for
sexual reproduction.
Paramecium: a unicellular protist covered in cilia. The cilia is used for mobility and the
Paramecium feeds through its specialized cell structure, its oral groove.
Paramecium
Macronucleus
Micronucleus
Contractile vacuole
Oral Groove
Volvox
 Volvox (vol-vox) is also a unicellular protist.
 Has chloroplasts to carry out photosynthesis
for its food source.
 Volvox is unique because it lives in a group of
cells called a colony.
 Each cell close to the surface propels the colony
through water with their two small flagella.
Volvox: a unicellular protist which lives in a colony and moves through the water
with flagella. (freshwater algae)
Volvox
Protists Groups and Features
Draw Table below on Page ?
Protist
Euglena
Amoeba
Paramecium
Volvex
Structure
Locomotion
(Movement)
Food source
(Energy)
Specialized
Cell
Structure
Protists Groups and Features
Protist
Structure
Locomotion
(Movement)
Unicellular
Flagellum
Feeds on other
organisms; can
make nutrients
Unicellular
Pseudopods
Feeds on other
organisms
Unicellular
Cilia
Feeds on other
organisms
Unicellular
(lives in colonies)
Flagella
Euglena
Amoeba
Paramecium
Volvex
Food source
(Energy)
Makes nutrients
Specialized Cell
Structure
Eyespot
Oral groove and
contractile
vacuole
Quick Check Quiz
1. Which protist is covered with cilia?
a. Euglena b. Amoeba c. Paramecium d. Volvox
2. Which protist moves by forming pseudopods?
a. Euglena b. Amoeba c. Paramecium d. Volvox
3. Which two protists share a feature with plant cells?
a. Amoeba and Paramecium
b. Euglena and Volvox
c. Amoeba and Euglena d. Paramecium and Volvex
4. Which protists have a unicellualar structure?
a. Euglena b. Paramecium
c. Amoeba
d. All the above

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