1. Warm-Up Take out a clean sheet of paper and answer the following question: What is a cell?

2. Warm-Up A cell is defined as: “The structural, functional and biological unit of all organisms.” Source: www.biology-online.org

3. Interesting Facts! A cell is the smallest unit of an organism that is classified as living, making it the “building block of life” Humans have about 100 trillion cells There are about 2.5 trillion blood cells in your body at any given time. 25 million new cells are being produced every second in your body. Longest cell can reach from the toe to the lower brain stem.

4. Objectives 1. The students will be able to identify the major organelles in a cell. 2. The students will be able to define the functions of each major organelle.

5. Today’s Agenda Warm-up Main cell organelles PowerPoint presentation Labeling worksheet Group Poster activity Closure

6. Main Cell Organelles

7. Main cell organelles Nucleus Mitochondrion Rough endoplasmic reticulum (RoughER) Smooth endoplasmic reticulum (SmoothER) Golgi apparatus Ribosomes Cell Membrane

8. Nucleus The “brain” of the cell Contains genetic information necessary for reproduction, growth and metabolism of the cell

10. Mitochondria The cells “power house” Converts energy into forms that are useable by the cell. Site of cellular respiration, generating ATP, or the fuel for the cells activities

11. Rough Endoplasmic Reticulum (Rough ER) Function in the processing and transport of proteins made by ribosomes Gets the name rough for the ribosomes that cover its surface, making it appear bumpy

12. Smooth Endoplasmic Reticulum (SER) Work with certain enzymes in providing storage space and surface areas. Controls movement of newly made proteins to their proper locations

13. Golgi Apparatus Modify, sort and package proteins and other materials from ER for storage in the cell or secretion outside the cell.

14. Endomembrane System

15. Ribosomes Make proteins Synthesize and assemble amino acids to form specific proteins Located throughout the cell and on the RoughER

16. Cell Membrane The cells “Gate Keeper” “Plasma Membrane” Encloses the cell and its contents. Selectively Permeable, controls what enters and leaves the cells

17. Labeling!

19. Group Poster Activity Each group will be assigned one of the cell organelles we just learned about. 1- Nucleus 2-Mitocondria 3- Rough and Smooth ER 4-Golgi Apparatus 5-Ribosome 6-Cell Membrane With your notes and one another construct a poster on your given cell organelle. Include the following: - a drawing of the organelle - a drawing of pneumonic device for the function of each organelle. - description of its function in the cell.

20. Exit Card: On a note card, write one thing you learned in class today.