Presentation on theme: "Do Now – November 16, 2011 When is it appropriate to use the coarse adjustment knob? What is the smallest unit of life? What is an organelle?"— Presentation transcript:
1 Do Now – November 16, 2011When is it appropriate to use the coarse adjustment knob?What is the smallest unit of life?What is an organelle?
2 Today’s Objective SWBAT Fill out your self-reflection Draw and label cells and cell partsDistinguish between plant and animal cellsFill out your self-reflectionTurn in Do Now, Microscope Labs 1 and 2Get out a clean sheet of paper
3 Organelles “elle” in organelle means “little” Little organSpecialized unit inside the cell that has its own functionNecessary in order to survive, grow, reproduceExamples: produce energy, provide storage, package proteinsTypically membrane-boundAllows for different chemical environments
4 Draw a cell and its parts NucleusDNAMitochondriaLysosomesCytoskeletonRibosomeRough Endoplasmic ReticulumSmooth ERVacuolesCytoplasmGolgi ApparatusCell membrane
6 Nucleus Large organelle near the center of the cell Houses genetic information (DNA)DNA contains the information needed to direct the activities of the cellControl Center / the “brain” of the cell
7 Cell MembraneBarrier between the outside environment and the inside of the cellHelps maintain homeostasisPermeable = allows liquids/gases to move throughCertain materials move in and out of the cell
8 Mitochondria Powerhouse of the cell Energy (ATP) made hereMighty mitochondria!Number of mitochondria depends on the cell function
9 RibosomesAttached to walls of the ER and are suspended in the cytoplasmProtein factoriesMake proteins for the rest of the body inside the cellInformation about making proteins comes from DNA
10 Endoplasmic Reticulum (ER) Network of membranes that are arranged in tubes and sacsTwo types:RoughRibosomes cover the outside of itCollects proteins from ribosomes for transport through the cellContinuous with nuclear envelopeSmoothDoes not contain ribosomesBuild lipid molecules such as fatHormone synthesis
17 VacuolesStorage binsContain nutrients/food or even wastes
18 Eukaryotic Cells: Animal and Plant Cells ProkaryotesEukaryotesPlant CellsAnimal Cells
19 Make This On Your Paper Cell Structure What’s It Look Like? Where’s It Located?What’s Its Function?VacuoleCell WallChloroplast
20 VacuolesVacuoles can be found in both plant and animal cells, but plant cells have a LARGE, CENTRAL vacuole while animal cells have very small vacuoles if they even have them. This means that in a plant, the vacuole can be seen in the middle of the cell, and it looks a lot like a lake.The vacuole moves the nucleus in a plant cell over because it is so big. Thus, when you look at a plant cell you can see the nucleus on the side.The vacuole acts as a storage compartment for the cell. Examples of materials that can be stored in the vacuole are water, pigments, and poisons.
21 Cell WallThe cell membrane is the outer barrier of any cell. Plant cells have an additional barrier called the cell wall. It is found outside of the cell membrane, and it is really rigid.Having a stiff outer wall gives the cells more support and protection. The cell wall gives the cell a regular shape (such as a rectangle) unlike the cell membrane which doesn’t have a set shape. Like the cell membrane, the cell wall is permeable and can let certain materials pass in and out of the cell.
22 ChloroplastsChloroplasts are found only in plant cells. They have a double membrane and stacks inside of them. They contain a green pigment called chlorophyll, which makes them (and the plant itself) appear green.Chloroplasts are the photosynthetic organelles of the plant. They take energy from the sun and convert it into food for the plant to use.
23 Do Now – November 21Name one major difference between a plant and an animal cell. Describe it.What type of cells are animal and plant cells?Explain how to make a wet mount.
24 Today’s Objective SWBAT… Distinguish between plant and animal cells Identify animal cells under a microscope
25 Draw a PLANT cell and its parts NucleusDNAMitochondriaLysosomesCytoskeletonRibosomeRough Endoplasmic ReticulumSmooth ERVacuoles (CENTRAL)CytoplasmGolgi ApparatusCell membraneCHLOROPLASTCELL WALL
26 Identify the Parts Cell Membrane Cytoplasm Lysosome Nucleolus Nucleus MitochondriaRibosomesRough ERSmooth ERChloroplastVacuoleCell Wall
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