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DO NOW!!

Name three things you must do when drawing a biological drawing What are some rules of using a microscope Name two differences between a plant and animal cell. DO NOW!!. ALWAYS in pencil Quarter page in size Keep it simple No hashed lines No colour No shading Labels

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DO NOW!!

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  1. Name three things you must do when drawing a biological drawing • What are some rules of using a microscope • Name two differences between a plant and animal cell DO NOW!!

  2. ALWAYS in pencil • Quarter page in size • Keep it simple • No hashed lines • No colour • No shading • Labels • Write the magnification Cells in focus???

  3. Ecology – Inter relationships (Week 1) • AS 90457 Practical investigation. Int. 3 credits. (Week 5) • US 8928 Use a microscope. Int. 3 credits. (Wweek 3) Standards Coming Up…

  4. Monday – Cell Structure and Function • Tues – Cell Structure and Function • Wed – AS • Thurs – AS This Week

  5. Write a step by step method of how you make a slide DO NOW!

  6. What is the difference between a light microscope, transmission electron microscope, and scanning electron microscope?? HOMEWORK

  7. I need to know what you know • Animal vs Plant Cells (hand out/cut out/ stick in) • What are organelles? • Functions of organelles AIMS FOR TODAY

  8. TEST

  9. CELLS 12 Bio – MAH 2010

  10. Occur universally and are the basic units of living organisms • 201 different cell types CELLS ...

  11. Brainstorm – what do you know about cells already?? Cells – What are they?

  12. Cells are the basic building blocks of life. All living things consist of at least one or more cells.

  13. Some organisms have many cells…

  14. …and some organisms are made from only one cell.

  15. Living things Viruses Prokaryotes “Before the nucleus” No nucleusSingle, circular chromosome No organelles Small cells Eukaryotes “True nucleus” Contain a nucleus Linear chromosomes Contain organelles Larger cells Bacteria Protists Plants Animals All living things are made of cells! 12Bio 2007

  16. Eukaryotic cells Protists - Mostly single celled - Some autotrophic - Some heterotrophic Plants - Multicellular - Autotrophic - Contain chloroplasts - Rigid cell wall made ofcellulose Animals - Multicellular - Heterotrophic - No cell wall Eukaryotic cells (continued) 12Bio 2007

  17. 12Bio 2007

  18. 12Bio 2007

  19. Plant Cells • Using the materials on the front bench create a plant cell • Use the resources from Mrs H to help you • Copy into your book

  20. Organelles are “little organs” – structures with particular functions within cells • You need to know the function of the organelles and differences in what organelles there are in plant cells, animal cells, and unicellular orgs (e.g. Paramecium) ORGANELLES - STRUCTURES

  21. Using the handout from Mrs H you need to fill this out • In pairs or groups of three to speed the process up • Then copy into your books the graphic organiser from the next slide To Do:

  22. Organelles are “little organs” – structures with particular functions within cells • Organelles common to all eukaryotic cells: • Nucleus • Ribosomes • Cell membrane • Cytoplasm • Mitochondria Use the text to find the functionof each of these organelles.Include a sketch of the organelleto help you identify it later Organelles 12Bio 2007

  23. Contains genetic material Controls the functioning of the cell Has pores so that things can enter and exit Nucleus 12Bio 2007

  24. What did the pink/red lollies represent? • What is another name for cell membrane? • What is the function of the cilia? • What is the function of the ribosomes? • What is the function of the endoplasmic reticulum smooth and rough? DO NOW!!

  25. 10 minutes draw some pictures for your table • If finished do Biozone • Rest of the lesson on cell types and unicellular organisms To Do!!

  26. Site of aerobic respiration Produces much of the ATP (energy) for the cell Two membranes Mitochondria 12Bio 2007

  27. 1. Regulates the flow of materials in and out of the cell 2. Receives signals from outside the cell and relays them to the inside 3. Separates the cell and its contents from the environment Plasma Membrane 12Bio 2007

  28. The site of protein synthesis Often found associated with the endoplasmic reticulum Ribosomes 12Bio 2007

  29. Modifies, packages anddistributes proteins Golgi Apparatus 12Bio 2007

  30. Specific to plants Made of cellulose Provides support and strength Cell Wall 12Bio 2007

  31. Contains lipids called phospholipids in two layers (a lipid bilayer) • Contains cholesterol • Contains integral membrane proteins: • receptors for hormones • transport proteins (ion channels etc.) • structural proteins • Forms a semi-permeable barrier for the transport of materials due to the nature of the phospholipids in the membrane Structure of plasma membranes 12Bio 2007

  32. Structure of a plasma membrane 12Bio 2007

  33. Structure of a plasma membrane 12Bio 2007

  34. Important for cell processes Plasma Membrane

  35. Cell Specialities

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