Formative Assessment

1. Formative Assessment Learning Goal: Explain individual function and interrelatedness of organelles in a cell.

2. Which is the organelle that holds thecells DNA (its genome) and is the control center of the cell? 20 • mitochondria • nucleolus • Nucleus • cytoplasm

3. Which is the organelle that removes energy from food & stores it in ATP, the energy source used by cells? 20 • Nucleus • Nucleolus • Mitochondrion • Cytoplasm

4. When you view eukaryotic cells vialight microscopy, you see a small dark, denseregion inside the nucleus. It is called the: 20 • ribosome • nucleolus • nucleoplasm • Nuclear membrane

5. What molecules inside the nucleus allow it to serve as the cell’s control center? 20 • DNA • Protein • Mitochondria • cytoplasm http://www.cartage.org.lb/en/themes/Sciences/Zoology/AnimalPhysiology/Anatomy/AnimalCellStructure/EndoplasmicReticulum/endoplasmic.jpg

6. The structure composed of a networkof protein filaments whose job is supporting the cell’s shape, allowing cell movement, &moving organelles inside the cell is the: 20 • Cell membrane • Cell wall • Cytoskeleton • Cilium, flagellum http://1.bp.blogspot.com/_LB1RoIlDaI4/TSI2J6I8m4I/AAAAAAAAACU/bUrPPK_lLfg/s1600/cytoskeleton.jpg

7. Which of the following is the function of the Endoplasmic reticulum (ER)? 30 • Converts light energy from the sun into carbohydrates • Make energy (ATP) to allow cells to use energy in food • Assembles proteins and lipids • Storage of water and food for the cell http://www.4to40.com/images/science/Smooth_Endoplasmic_Reticulum/Smooth_Endoplasmic_Reticulum.jpg

8. Extended Response List 6 organelles and describe their structure and function.

9. Exemplary Answer • Nucleus – Contains DNA, controls cell function • Ribosome – Synthesize proteins • Endoplasmic Reticulum – assembles proteins and lipids • Golgi Apparatus- modifies, sorts, packages proteins • Chloroplast – coverts solar energy into chemical energy stored in food • Mitochondria – converts chemical energy in food to usable compounds • Cell Membrane- regulates materials entering and leaving the cell; protects the cell • Cell Wall – shapes, supports, and protects the cell

10. Self-Evaluation • 4 • 3 • 2 • 1

11. Extended Response Explain how the cell synthesizes and transports proteins to the outside of the cell. Use 3 organelles in your description.

12. Exemplary Answer The nucleus is essential to the functioning of the entire cell because it contains DNA. The DNA contains the instructions for making proteins. Proteins are macromolecules that make up the other organelles and have specific jobs for the cell. The proteins are synthesized on the ribosome. The proteins are finish their synthesis inside the Endoplasmic Reticulum. From there, the proteins are packaged in a transport vesicle and go to the Golgi Apparatus where they are modified, sorted, and packaged into an excretory vesicle. The excretory vesicle sends them to the cell membrane where they exit the cell.

13. Self-Evaluation • 4 • 3 • 2 • 1

14. Learning Goal:List the elements that make up a living cell and explain how their chemical properties impact life.

15. Which of the following is NOT one of the 6 most abundant in organisms? • Carbon • Oxygen • Hydrogen • Sodium

16. Which of the following elements is the basis of all organic molecules? • Oxygen • Nitrogen • Carbon • Hydrogen

17. Extended Response Explain what properties of an atom of carbon allow it to be the basis of all organic molecules.

18. Exemplary Answer Carbon is a small atom and has four available bonding electrons. Because of the these properties it can join to other carbon atoms in chains and ring to form large and complex molecules.

19. Self-Evaluation • 4 • 3 • 2 • 1