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Word Bank. Diaphragm Arm Base Stage Revolving nosepiece Light source Objectives eyepiece. Body tube Coarse adjustment knob Fine adjustment knob Stage clips. Cell Organelles. Cell Organelles. Organelle = “ little organ ” Found only inside eukaryotic cells

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  1. Word Bank Diaphragm Arm Base Stage Revolving nosepiece Light source Objectives eyepiece Body tube Coarse adjustment knob Fine adjustment knob Stage clips

  2. Cell Organelles

  3. Cell Organelles • Organelle= “little organ” • Found only inside eukaryotic cells • All the fluid like substance between the organelles is called cytosol. • Everything in a cell except the nucleus is cytoplasm

  4. Cell Membrane • Boundary of the cell • Made of a phospholipidbilayer

  5. Acts as skeleton and muscle Provides shape and structure Helps move organelles around the cell Two types of protein Filaments: 1.Microfilaments-made up of actin, provide cell support and helps the cell move. 2.Microtubules:-hollow structures made up of tubulins, help the cell maintain its shape and aids in cell division. Cytoskeleton

  6. Cell Wall • Found in plant and bacterial cells • Rigid, protective barrier • Located outside of the cell membrane • Made of cellulose (fiber)

  7. Nucleus • Control center of the cell • Contains DNA • Surrounded by a double membrane called the Nuclear Envelope. • The Nuclear Nuclear Envelope has pores that allow materials to move in and out of the cell.

  8. Nucleus Chromosomes are found in the nucleus, they contain genetic information. The center of the nucleus is the Nucleolus. That is where the assembly of ribosomes begins.

  9. http://www.biomanbio.com/GamesandLabs/Cellgames/CellExplorerAnimalCell.htmlhttp://www.biomanbio.com/GamesandLabs/Cellgames/CellExplorerAnimalCell.html

  10. Endoplasmic Reticulum • A.k.a. “ER” • Connected to nuclear membrane • Highway of the cell • Rough ER: studded with ribosomes; it makes proteins • Smooth ER: no ribosomes; it makes lipids

  11. Ribosome • Site of protein synthesis • Found attached to rough ER or floating free in cytosol • Produced in a part of the nucleus called the nucleolus

  12. Golgi Apparatus • Looks like a stack of plates • Stores, modifies and packages proteins • Molecules transported to and from the Golgi by means of vesicles • Vesicles are used to store and move materials between organelles and to cell surface.

  13. Lysosomes • Garbage disposal of the cell • Contain digestive enzymes that break down wastes Which organelles do lysosomes work with?

  14. Vacuoles • Large central vacuole usually in plant cells • Many smaller vacuoles in animal cells • Storage container for water, food, enzymes, wastes, pigments, etc.

  15. Mitochondria • “Powerhouse of the cell”- Makes ATP • Cellular respiration occurs here to release energy for the cell to use • Bound by a double membrane.

  16. Chloroplast • Found only in plant cells • Contains the green pigment chlorophyll • Site of food (glucose) production • Bound by a double membrane

  17. Centriole • Aids in cell division • Usually found only in animal cells • Made of microtubules Where else have we talked about microtubules?

  18. Quick Review • Which organelle is the control center of the cell? Nucleus • Which organelle holds the cell together? Cell membrane • Which organelles are not found in animal cells? Cell wall, central vacuole, chloroplasts • Which organelle helps plant cells make food? Chloroplasts • What does E.R. stand for? Endoplasmic reticulum

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