2. Eukaryotic Cell Structures & Functions

3. An Organelle Is: A minute structure within a plant or animal cell that has a particular job or function.

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

5. Found only in Plants: Cell Walls Cellulose Chloroplasts

6. Plant Cell Cellulose = carbohydrate found in cell walls Cell Wall= forms rigid outer structure, made of cellulose (fiber)

7. Chloroplast= absorbs light, changes light energy into chemical energy for photosynthesis = GREEN Sacks

8. PLANT CELL Cell wall Large vacuole Chloroplast

9. Found in both Plant and Animal Cells Cell Membrane= Semi-permeable, controls what enters and leaves the cell, outer containment envelope. Cytoskeleton = gives structure to a cell (#14)

11. ANIMAL PLANT Nucleus Cell Membrane

12. Control center for plant and animal cells: This organelle controls cell activities and reproduction

13. Animal Cell Nucleus Nucleolus= “little nucleus ”

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

15. Chromosome = coiled DNA: contains instruc- tions for char- acteristics of an organism. Chromatin = protein composing chromosomes

16. Red Blood Cells have no: nucleus

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

18. Ribosomes= Site of Protein Synthesis on the E.R. Endoplasmic Reticulum ROUND Ribosomes

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

20. ER = Endoplasmic Reticulum: specializes in the production & transport of lipids and membrane proteins Rough ER has ribosomes Smooth ER lacks ribosomes Ribosomes: Where proteins are manufactured.

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

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

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

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

25. Lysosome: Contains digestive enzymes Breaks down large molecules

26. Mitochondria = site where energy is released from glucose in the form of: The power house of the cell: ATP