1. Amoeba Chlamydomonas Euglena Paramecium
Protista
Amoeba
Chlamydomonas
Euglena
Paramecium

2. Classification Based on method of locomotion
Rhizopoda – have pseudopodia eg amoeba
Flagellates include Chlamydomonas & Euglena
Ciliates include Paramecium
NCEA external questions usually based on normal cell organelles wrt protists OR contractile vacuoles wrt osmoregulation.

3. Amoeba No definite shape
Phagocytosis  food vacuole stores and digests
Moves by anterior and secondary pseudopods.
Would you expect to find an eye spot in amoeba?
No – amoeba doesn’t need light – no photosynthesis!

4. food vacuole contractile vacuole pseudopod
(very short)

5. Chlamydomonas Unicellular flagellate green alga.
Chloroplasts for photosynthesis.
Pyrenoids are centres of carbon dioxide fixation within the chloroplasts of algae
Would chlamydomonas have an eye spot?
Yes – chlamydomonas photosynthesises! Eye spot is part of the large chloroplast

6. contractile vacuole
chloroplast
flagellum

7. Euglena
Heterotrophic phagocytosis AND Autotrophic photosynthesis (has chloroplasts)
Fresh water / salt water / soil.
Whip-like flagellum.
Can form dormant spore in dry conditions.
Would euglena have an eye spot?
Yes – usually red, near flagellum.

8. eye spot contractile vacuole chloroplast
(very short)

9. Paramecium Freshwater ciliate
Deep oral groove with oral cilia which draw food inside.
The bubbles throughout the cell are also vacuoles.
Cilia all over the body or restricted only to certain regions.
Would paramecium have an eye spot? No

10. meganucleus contractile vacuoles
(eating)
meganucleus
contractile vacuoles
(short)

11. Complete table in Chilton booklet
Organism
Nutrition
Movement
Osmoregulation
Eye spot
Amoeba
heterotrophic
pseudopodia 
Contractile vacuoles   n
Paramecium
heterotrophic 
cilia
 Contractile vacuoles
Euglena
heterotrophic and autotrophic 
flagellum 
contractile vacuole  y
Chlamydomonas
 heterotrophic and autotrophic
flagella  y
Organism
Nutrition
Movement
Osmoregulation
Eye spot
Amoeba
heterotrophic
Paramecium
cilia
Euglena
contractile vacuole
Chlamydomonas y
Complete table in Chilton booklet

12. Handouts
Unicellular Protists handout
Clickview
Homeostasis (25 min)

13. MENU
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14. Key words Metabolism Enzyme-substrate complex Substrate
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Metabolism
Enzyme-substrate complex
Substrate
Lock and Key model
Product
Induced fit model
Reaction rate
Exergonic
Enzyme
Endergonic
Globular protein
Activation energy
Biological catalyst
3D structure
Denaturation
Active site
Specificity

15. Quick quiz Chemical reactions in living cells are _____ reactions
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Chemical reactions in living cells are _____ reactions
____ reactions build up molecules
____ reactions break down molecules
____ speed up reactions
____ are biological catalysts
Enzymes are made of ____
Enzymes are ____-shaped
Enzyme function depends on its ____
The ____ site of the enzyme binds with the substrate
____ model: substrate must fit exactly into the enzyme
____ model: enzyme shape can change to fit
Enzymes lower the ____ required to initiate a reaction
Answers

16. Quick quiz Chemical reactions in living cells are metabolic reactions
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Chemical reactions in living cells are metabolic reactions
Anabolic reactions build up molecules
Catabolic reactions break down molecules
Catalysts speed up reactions
Enzymes are biological catalysts
Enzymes are made of protein
Enzymes are globular-shaped
Enzyme function depends on its shape
The active site of the enzyme binds with the substrate
Lock and key model: substrate must fit exactly into the enzyme
Induced fit model: enzyme shape can change to fit
Enzymes lower the activation energy required to initiate a reaction

17. Exercise Workbook p58 Pathfinder pp42-3 qq 1-4 Chilton Booklet
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Workbook p58
Pathfinder pp42-3 qq 1-4
Chilton Booklet

18. Videos http://www.youtube.com/watch?v=oddMUHIj0wI
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(7minutes)

19. Recap Draw and label each protist Pathfinder p43, q1-3
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Draw and label each protist
Pathfinder p43, q1-3
Pair up with a friend and teach each other
Draw a mind-map of important processes
Chilton booklet worksheet

20. Amoeba Nutrition – pseudopods engulf _____ food
Locomotion – flowing of __________
psudopod
Osmoregulation – contractile vacuoles expel ___________
water
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Contains ingested ___________
food

21. flagella eye spot contractile vacuole cell wall starch granule
2 hairlike projections for rapid, jerky movement
for light detection
eye spot
contractile vacuole
osmoregulation
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storage
cell wall
starch granule
composed of cellulose
pyrenoid
starch formation

22. eye spot for light detection
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beats for locomotion
eye spot for light detection
osmoregulation
flexible, inside plasma membrane – cell can change shape

23. oral groove with cilia to beat food into mouth
beat for locomotion
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oral groove with cilia to beat food into mouth 2

24. Mitosis and Cytokinesis
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Mitosis and Cytokinesis
No sexual reproduction