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Introduction to Plant & Animal CellsChapter 10 Lesson 3Looking Inside Cells1

Essential QuestionWhat are cells made of?

How do the Parts of a Cell Work?

Cell TypesProkaryoticEukaryoticNo NucleusNo OrganellesExample: Bacteria

Contains Nucleus Contains Organelles.Example: Plant & Animal Cell

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16Home Learning Complete Lesson 4 Assess Your Understandings Review & Assessment Page 398 #12-17Cell Phone- 4/4 Gizmo #16- 4/5

Essential Lab Microscope ActivityComparing Plant and Animal Cells

18Animal Cells from the CheekUsing a toothpick, you can scrape some cells off the inside of our cheeks. You can imagine how often the skin on the inside of your cheeks rubs against your teeth -- whenever you move your mouth! Every time you move your mouth, a few cheek cells (called epithelial cells) rub off and you swallow them.

Stained cells using a chemical called methylene blue19Plant Cells from the ElodeaA floating, flowering plant common in ponds that has leaves that are only two cells thick! The green specks are chloroplasts, which are the little packets inside the cells containing chlorophyll (molecule that converts sunlight + carbon dioxide + water into sugar)

20CharacteristicsPlant CellAnimal CellCell SizeLargeSmaller than plant cellsCell ShapeRectangularCircularVacuolesA single centrally located vacuole. It takes up almost 90% of the cell volume. The vacuole stores water.If any, there are a number of small vacuoles spread throughout the cytoplasm that store water, ions and waste materials.Cell WallPresentA rigid cell wall made of cellulose helps plant maintain shape.AbsentThis allows animal cells to adopt different shapes.ChloroplastsPresentChlorophyll is the pigment that traps sun's energy which is utilized by plants to make food through the process of photosynthesis. This pigment is present in the chloroplasts. AbsentAs animals lack this pigment, they cannot make their own food.LysosomesAbsentPresentVesicles that contain enzymes that destroy dead cell organelles and other cells debris.Golgi BodiesIn place of golgi bodies, its sub units known as dictyosomes are present.Complex Golgi bodies are present close to the nucleus.21