1. Today’s Plan…. 20 Feb 2013 Finish the Jello Cell  Drawing, self evaluation etc. (You have 15 minutes)  I also need to look at your Jello Cell, so leave on counter with completed lab for me to evaluate  You cannot eat until lunch time… Review Cells & Compare Prokaryotic and Eukaryotic Cells  Bacteria & Viruses  Venn Diagram  Read & Review Questions, pg. 31 #1-5 Review Handouts from Monday Talk about Pond Water Lab (c) McGraw Hill Ryerson 2007

2. 1.2 Cells An analogy is a way to understand new ideas by making a comparison. A factory can be used as an analogy for the cell. Parts of the cell that allow the cell to survive are called organelles. Organelles take up about 5 to 30 percent of the cell. The rest of the cell consists of water.

3. (c) McGraw Hill Ryerson 2007 The Functions of Cell Organelles The cell membrane protects the cell and regulates the movement of particles in and out of the cell. Cytoplasm, the jelly-like substance within the cell, contains organelles, water, and other life supporting materials. The nucleus:  controls all the activities within the cell.  contains deoxyribonucleic acid (DNA). See page 25

4. (c) McGraw Hill Ryerson 2007 Energy in the Cell The mitochondria are the organelles that produce energy in the cell. When the cell changes chemical energy, in the food we eat, to energy the cell can use, it is called cellular respiration. The total of all the chemical reactions that take place in our cells is called our metabolism. See page 26 Cellular Respiration

5. (c) McGraw Hill Ryerson 2007 Organelles for Assembly, Transport, and Storage See pages 28-29 Proteins are essential for all life and are assembled by the ribosomes. Proteins then pass through the endoplasmic reticulum and are placed in vesicles by the Golgi body. Vacuoles are temporary storage compartments. Lysosomes break down food particles, cell wastes, and worn-out organelles.

6. (c) McGraw Hill Ryerson 2007 The Difference Between Plant and Animal Cells See pages 29-30 Plant cells have two parts that are not found in animal cells:  Cell Wall  protects the cell and gives cell shape  Chloroplasts  change the Sun’s energy into chemical energy Photosynthesis Locate the cell wall and chloroplast

7. (c) McGraw Hill Ryerson 2007 Cell Theory See pages 31-32 The cell is the basic unit of life. All organisms are composed of one or more cells. All cells come from other living cells.

8. Prokaryotic Cell vs Eukaryotic Cell Venn Diagram… (c) McGraw Hill Ryerson 2007 Prokaryotic Cell Differences Eukaryotic Cell Differences Cell Similarities Look @ Diagrams Pg 32 text & Compare…

9. (c) McGraw Hill Ryerson 2007 Prokaryotic and Eukaryotic Cells See page 32 Cells are classified into two groups: Prokaryotic cells have organelles that are not surrounded by membranes. Eukaryotic cells have organelles that are surrounded by membranes. Eukaryotic cells are usually larger than prokaryotic cells.

10. (c) McGraw Hill Ryerson 2007 Bacteria and Viruses Bacteria are prokaryotic cells. Some bacteria cause diseases such as: tuberculosis and strip throat. Helpful bacteria are used to make food such as: cheese and yogurt. Bacteria are often grouped by the shape of their cells. Viruses are not living. HIV, chicken pox, and the flu are examples of viruses. Viruses do not contain any cell organelles but reproduce by using a host cell. See pages 33 - 34

11. Now it’s your turn… Read & Review Questions, pg. 31 #1-5 We will go over this in 15 minutes Review Handouts from Monday  Answers & any questions Talk about Pond Water Lab  Missing parts and effort levels Cell Quiz FRIDAY A friendly heads up… you should have your vocab done by Tuesday of next week… You know what that means? (c) McGraw Hill Ryerson 2007