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Cell processespowerpoint07 08

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Cell Processes

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Cell processespowerpoint07 08

  1. 1. CELLCELL PROCESSESSPROCESSESS andand ENERGYENERGY QuickTime™ and a decompressor are needed to see this picture.
  2. 2. Cell ProcessesCell Processes How do cells get the energyHow do cells get the energy they need to carry out all theirthey need to carry out all their functions?functions? QuickTime™ and a decompressor are needed to see this picture.
  3. 3. ChemicalChemical Compounds inCompounds in CellsCells Element:Element: Any substance thatAny substance that cannot be broken down intocannot be broken down into simpler substances.simpler substances. Examples: Carbon (C),Examples: Carbon (C), Hydrogen (H), Oxygen (O),Hydrogen (H), Oxygen (O), QuickTime™ and a decompressor are needed to see this picture.
  4. 4. ChemicalChemical Compounds inCompounds in CellsCells Compound:Compound: When 2 or moreWhen 2 or more elements combine chemicallyelements combine chemically to form a compound.to form a compound. Examples: Water (HExamples: Water (H22 O), SugarO), Sugar (C(C66 HH1212 OO66 ), Salt (NaCl)), Salt (NaCl) QuickTime™ and a decompressor are needed to see this picture.
  5. 5. Organic vs. InorganicOrganic vs. Inorganic  Organic Material:Organic Material: Are compounds that areAre compounds that are living or were once living.living or were once living.  Compounds that are organic will contain theCompounds that are organic will contain the elements Carbon (C) and Hydrogen (H).elements Carbon (C) and Hydrogen (H).  Cells need to use organic compounds forCells need to use organic compounds for energy in order for the organelles to performenergy in order for the organelles to perform their individual functions.their individual functions.
  6. 6. Organic vs. InorganicOrganic vs. Inorganic  Inorganic:Inorganic: Compounds that are not or neverCompounds that are not or never were living.were living.  Compounds that are Inorganic will notCompounds that are Inorganic will not contain the elements Carbon (C) andcontain the elements Carbon (C) and Hydrogen (H) together.Hydrogen (H) together.  Example: (Water) HExample: (Water) H22OO  Water is needed to perform all functionsWater is needed to perform all functions within a cell.within a cell.
  7. 7. Obtaining energy.Obtaining energy.  Humans must eat food and drink waterHumans must eat food and drink water in order to obtain the necessaryin order to obtain the necessary energy for our bodies to function.energy for our bodies to function.  In the same way, cells must consumeIn the same way, cells must consume “food” and use water in order for them“food” and use water in order for them to function as well.to function as well.
  8. 8. How Does The Cell GetHow Does The Cell Get Its Food and Water?Its Food and Water? The Cell Membrane is SELECTIVELY PERMEABLE: Some things are allowed in or out and some things are not allowed in or out. (Like a Screen Door). QuickTime™ and a decompressor are needed to see this picture.
  9. 9. How Does The Cell GetHow Does The Cell Get Its Food and Water?Its Food and Water? 3 Ways that Substances can move in or out of a cell: 1. Osmosis: Is the movement of water in and out of the cell.
  10. 10. How Does The Cell GetHow Does The Cell Get Its Food and Water?Its Food and Water? 3 Ways that Substances can move in or out of a cell: 2. Diffusion: Molecules move from an area of high concentration to an area of lower concentration.
  11. 11. How Does The Cell GetHow Does The Cell Get Its Food and Water?Its Food and Water? 3 Ways that Substances can move in or out of a cell: 3. Transport: Passive Transport: Materials passing through the cell membrane without requiring the cell’s energy. (Moving from High concentration low concentration.) Active Transport: Materials passing through the cell membrane that require the cell’s energy. (Moving from low concentration to high concentration.) QuickTime™ and a decompressor are needed to see this picture.
  12. 12. PhotosynthesisPhotosynthesis  Plants use light energy (sunlight) toPlants use light energy (sunlight) to combine carbon dioxide (COcombine carbon dioxide (CO22 ) and) and water (Hwater (H22 O) to make simple sugarsO) to make simple sugars (C(C66 HH1212 OO66 ))
  13. 13. Why is this important to us?Why is this important to us?  We cannot make our own foodWe cannot make our own food (glucose or energy) we must get(glucose or energy) we must get our food from plants.our food from plants.  Plants are the first step in thePlants are the first step in the food chain.food chain.
  14. 14. What is all this “food” (betterWhat is all this “food” (better known as glucose) used for?known as glucose) used for?  It can be used by the plant to makeIt can be used by the plant to make energy in the mitochondriaenergy in the mitochondria  It can be stored by the plants in vacuolesIt can be stored by the plants in vacuoles  It can be eaten by a consumerIt can be eaten by a consumer
  15. 15. What happens duringWhat happens during photosynthesis?photosynthesis?  Chloroplasts in plant cellsChloroplasts in plant cells capture light energy and usecapture light energy and use that energy to make glucosethat energy to make glucose or “food”or “food”  Oxygen gas is also releasedOxygen gas is also released as a by-product in thisas a by-product in this reactionreaction
  16. 16. Photosynthesis
  17. 17. Cellular RespirationCellular Respiration  ALL organisms break downALL organisms break down simple sugars (Csimple sugars (C66 HH1212 OO66 ) for the) for the energy they containenergy they contain
  18. 18. Cellular RespirationCellular Respiration  Sugar is broken down into CarbonSugar is broken down into Carbon Dioxide (CODioxide (CO22 ) and Water (H) and Water (H22 O)O)  The Chemical Formula looks likeThe Chemical Formula looks like this:this: CC66HH1212OO66 ++ OO22  COCO22 ++ HH22O + ENERGYO + ENERGY Sugar+ OxygenCarbon Dioxide + water + ENERGY Or in English…….
  19. 19. What’s this energy for?What’s this energy for?  To build new cell partsTo build new cell parts  To repair cell partsTo repair cell parts  To reproduce cellsTo reproduce cells
  20. 20. Where does it happen?Where does it happen?  Cellular RespirationCellular Respiration occurs in theoccurs in the mitochondria!!!mitochondria!!!

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