1. Warm Up
Write one paragraph to describe how you spent your Thanksgiving Break.

2. Science Warm
Which processes can change a metamorphic rock into an igneous rock? A. weathering and erosion B. melting and cooling C. deposition and cementation D. heat and pressure

3. Cell Structure & Function

4. GLE
Make observations and describe the structure and function of organelles found in plant and animal cells. Homework page 55 in science text book. Answer all questions. Due tomorrow!

5. Vocab
Cell Membrane
Cell Wall
Nucleus
Nucleolus
Chromosome
Cytoplasm
Endoplasmic Reticulum
*Rough & Smooth
9. Mitochondrion 10. Ribosomes 11. Golgi Complex 12. Lysosome 13. Vacuole 14.Chloroplast

6. Definition of Cell
A cell is the smallest unit that is capable of performing life functions.

7. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell
Nerve Cell

8. Discovery of Cells The invention of the lens
Robert Hooke (1665): observed a thin slice of cork (dead plant cells) with a microscope. He described what he observed as “little boxes” (cells).

9. The Cell Theory What is the cell theory?
1. All living things are composed of one or more cells.
2. Cells are organisms’ basic units of structure and function.
3. Cells come only from existing cells.

10. The Cell Theory Who developed the cell theory?
Matthias Schleiden (1838): concluded that all plants are composed of cells
Theodor Schwann (1839): concluded that all animals are composed of cells
Rudolph Virchow (1855): determined that cells come only from other cells

11. Cell Diversity
Size
Shape
Internal Organization

12. Cell Diversity- Size

13. Cell Diversity- Size Smallest Cells: Biggest Cells: Longest Cells:
6 inches long, 5 inches wide, 3 pounds
Ostrich Egg

14. Prokaryotic Eukaryotic
Two Types of Cells
Prokaryotic
Eukaryotic

15. Prokaryotic Cells Do not have structures surrounded by membranes
Few internal structures
One-celled organisms, Bacteria

16. Eukaryotic Contain organelles surrounded by membranes
Most living organisms
Plant
Animal

17. “Typical” Animal Cell

18. “Typical” Plant Cell

20. The Parts of the Cell
Each living cell carries out the tasks of taking food, transforming food into energy, getting rid of wastes, and reproducing.

21. the parts that make up the cell.
Organelles
the parts that make up the cell.

22. Surrounding the Cell

23. Cell Membrane
Outer membrane of cell that controls movement in and out of the cell
Double layer
Selectively permeable
Found in all cells

24. Cell Wall Most commonly found in plant cells & bacteria
Supports & protects cells

25. Inside the Cell

26. Nucleus
Structure: the nucleus is a sphere that contains another sphere called a nucleolus
controls cell activities
-Contains genetic material - DNA

27. Nucleolus Inside nucleus Contains RNA to build proteins

28. Chromosomes In nucleus Made of DNA
Contain instructions for traits & characteristics

29. Cytoplasm Gel-like mixture Surrounded by cell membrane
Contains hereditary material

30. Endoplasmic Reticulum
intercellular highway (a path along which molecules move from one part of the cell to another) Smooth ER: lacks ribosomes
Rough ER (pictured): ribosomes embedded in surface
* Smooth and Rough ER have different functions

31. Ribosomes Each cell contains thousands Make proteins
Found on ribosomes & floating throughout the cell

32. Mitochondria
Produces energy through chemical reactions – breaking down fats & carbohydrates
Controls level of water and other materials in cell
Recycles and decomposes proteins, fats, and carbohydrates

33. Golgi Bodies Protein 'packaging plant' Move materials within the cell
Move materials out of the cell

34. Lysosome
Function: breaks down food particles, invading objects, or worn out cell parts

35. Vacuoles Structure: a sac of fluid surrounded by a membrane
Very large in plants
Function: used for temporary storage of wastes, nutrients, and water

36. Chloroplast Usually found in plant cells Contains green chlorophyll
Where photosynthesis takes place

37. 3 organelles found in plant cells but not in animal cells
1.Chloroplast 2.Large Central Vacuole 3. Cell Wal

38. Science Closure
In which cell organelle does photosynthesis take place? A. vacuole B. chloroplasts C. cell wall D. mitochondrion