1. Eukaryotic Cell Structures & Functions
Ch 7 Section 2

2. An Organelle Is:
A minute structure within a plant or animal cell that has a particular job or function.
“little organs”

3. What are some functions that occur within a cell?
Digestion Excretion
Transportation of cell’s products
Storage Protection
Division Mobility
Respiration or Photosynthesis

4. Organelles found only in Plants:
Cell Walls
Cellulose
Chloroplasts

5. Plant Cell
Cellulose = carbohydrate found in cell walls, helps give more strength
Cell Wall= forms rigid outer structure, made of cellulose (fiber) (like walls of your house)

6. Chloroplast= absorbs light, changes light energy into chemical energy(ATP) for photosynthesis = contain chlorophyll green pigment GREEN Sacks

7. Cell wall
Chloroplast
Large vacuole
PLANT CELL

8. Found in both Plant and Animal Cells
Organelles that surround cells for support:
Cell Membrane= Semi-permeable,
controls what enters and leaves the cell, outer containment envelope.
Cytoskeleton =
gives structure to a cell

10. Nucleus
Cell
Membrane
ANIMAL PLANT

11. Nucleus (boss/government)
Control center for plant and animal cells:
This organelle controls cell activities and reproduction

12. Nucleus
Nucleolus=
“little nucleus”
Animal Cell

13. Control center for plant and animal cells:
Nucleus = control center for activities & reproduction, DNA & chromosomes housed here.
Nucleolus = contains and makes RNA

14. Control center for plant and animal cells:
Chromosome (laws/rules)= coiled DNA: contains instruc-tions for char-acteristics of an organism.
Chromatin = protein composing (making up) chromosomes

15. Red Blood Cells have no:
nucleus

16. Control center for plant and animal cells:
Nuclear membrane = protects and controls what goes in and out of the nucleus
(notice the nuclear pores in this picture of a nucleus)

17. Endoplasmic Reticulum
The cells inner highway system around the nucleus. There are many “pit-stops” along the way in the form of ribosomes which produce proteins.

18. Endoplasmic Reticulum
“Rough” with Ribosomes
for protein synthesis
“Smooth” =
Membrane “highway”
For transport of materials

19. Endoplasmic Reticulum
Ribosomes= Site of Protein Synthesis (making) on the E.R. Free ribosomes make proteins that stay in the cell. Bound ribosomes make proteins that get sent out of the cell.
Endoplasmic Reticulum
ROUND Ribosomes

20. Cytoplasm:or cytosol, = gel surrounds the organelles, contains enzymes

21. Golgi Bodies (aka Golgi Apparatus):
where cell products are modified and packaged in vesicles for export from the cell.
“Sacks” for making & storing
Secretions (like UPS)

22. Vacuole = storage for food and water Why are plant vacuoles larger than animal vacuoles?

23. Do you see 2 Contractile vacuoles
Some Animal cell vacuoles pump water out by contracting:
Do you see 2 Contractile vacuoles
in this Paramecium?

24. Lysosome:
Contains digestive enzymes breaks down large molecules and wastes (the cleaner/janitor)

25. The power house (power plant)of the cell: The mighty:
Mitochondria = site where energy is released from glucose in the form of:
ATP
Sounds like DTE energy

27. Cilia and Flagella
Hair-like organelles used for movement.