1. Bellringer Cancelled on Short
Week

2. Agenda
 Collect Homework
– Cell Metaphor Assignment
 Notes: Plants & Protists
– Specialized Plant Organelles
– Protists: Jack of All Trades

4. Plant Specific Organelles
 Plants cells have all of the organelles
that Animal cells do.
 They also have a few organelles that
animals do not have.
– Cell Wall
– Chloroplasts
– Central Water Vacuole

6. Cell Wall
 The cell wall surrounds the
membrane of plant cells.
 It is made of a tough,
fibrous material called
cellulose.
 It provides support and
protection for the cell.

8. Chloroplasts
 Chloroplasts are the organelles where
photosynthesis occurs.
 Photosynthesis is when light energy is
captured and used to combine water
and carbon dioxide into glucose (sugar).

10. Central Water Vacuole
 The central water vacuole is a large
vacuole in plants that stores water.
 It also keeps turgor pressure, which is
the pressure exerted on the cell wall
that helps a plant remain upright.

12. BrainPOP: Cell Types

14. Protists
 Protists are very diverse lifeforms.
 They are eukaryotic organisms that may
be unicellular or multicellular and may be
consumers or producers.
 There are 3 categories of protists
– Animal-Like
– Plant-Like
– Fungus-Like

15. Protozoans (Animal-Like)
 Unicellular, so similar to bacteria
 Eukaryotic, so similar to plants & animals
 Protozoans move by use of flagella, cilia,
or pseudopods.

16. Pseudopod Movement
 Pseudopods are also called
‘false feet’
 Cell membrane pushes in one
direction & the cytoplasm
flows into the bulge. The
protozoan moves by dragging
the rest of the cell behind it.
 Pseudopods can also be used
to surround and trap food

17. Pseudopod Feeding

18. Ameoba Movement Video

19. Algae (Plant-Like)
 Some algae are multicellular, so they are
similar to plants (kelp/seaweed)
 Euglena are unicellular algae that perform
photosynthesis, but will act like
consumers when there is no sunlight

20. Euglenoid Video

21. Slime Molds (Fungus-Like)
 These “blobs” are decomposers who
move to feed on dead material
 Like plants these have cell walls, but the
wall is not made of cellulose

22. Slime Mold Video

23. Summary
 Plants Cells Contain:
– Chloroplasts
– Cell Wall
– Central Water Vacuole
 Protists
– Animal-Like (Protozoans)
– Plant-Like (Algae)
– Fungus-Like (Slime Molds)