Cells PowerPoint
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Cells PowerPoint

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  • Prokaryotic Cells are more primative- meaning eukaryotic cells are more complex than prokayotic cells
  • The ability to maintain a constant body temperature Cold-blooded – Must stay in an area where the outside temperature stays at a fairly constant, warm temperature Warm-blooded – Have a higher ability of homeostasis (the ability to keep the animals insides at a common temperature)
  • Redi's experiment proving maggots are not spontaneously produced in rotten meat.
  • Development of this theory during the mid 1600s was made possible by advances in microscopy . This theory is one of the foundations of biology . The cell theory holds true for all living things, no matter how big or small, or how simple or complex. Since according to research, cells are common to all living things, they can provide information about all life.

Cells PowerPoint Cells PowerPoint Presentation Transcript

  • CELLS
  • CELLS
  • COMMON CHARACTERISTICS
    • The smallest particle of a living thing
    • Can move
    • Perform complex activities
    • Grow and develop
    • Respond and adapt to their environment
    • All reproduce
  • TWO KINDS OF CELLS
    • Eukaryotic
      • Animal Cells
      • Plant Cells
    • Prokaryotic
      • Bacteria
  • TO SURVIVE, THEY NEED
    • Energy
    • Food and Water
    • Oxygen
    • Living space
    • Ability to maintain a constant temperature
      • Cold blooded
      • Warm blooded
  • SPONTANEOUS GENERATION
    • When people thought animals could just spring to life from non-living things
    • Francesco Redi
  • CELL THEORY
    • The 4 Basic Components of the Cell:
    • 1. All organisms are composed of one or more cells.
    • 2. The cell is the basic unit of life in all living things.
    • 3. All cells are produced by the division of preexisting cells.
    • 4. Cell activity depends on the activities of sub-cellular structures within the cell(organelles, nucleus, plasma membrane)
  • CHEMISTRY OF LIVING THINGS
  • NON-LIVING MATTER
    • Smallest substance of non-living things?
      • Elements / Atoms
    • Combinations of elements?
      • Compounds
  • ORGANIC/INORGANIC
    • Organic substances
      • Composed of compounds that include carbon
    • Inorganic substances
      • Composed of compounds that do not include carbon
  • ORGANIC COMPOUNDS
    • Some compounds are essential to basic life
      • Carbohydrates
      • Fats and oils
      • Proteins
      • Enzymes
      • Nucleic acids (DNA)
  • TRANSFER OF SUBSTANCES
    • Diffusion
    • Osmosis
    • Active Transport
  • DIFFUSION
    • Diffusion: where substances move from a higher concentration to a lower concentration
      • Not always in a cell
      • The cell membrane is selectively permeable …it permits only certain substances (oxygen, water and food molecules) to diffuse into the cell
  • OSMOSIS
    • Diffusion involving the most important component of a cell
      • WATER
    Click the image to watch a short animation.
  • ACTIVE TRANSPORT
    • Using some of the cell’s energy to “carry” substances in or out of the cell
    • The cell DOESN’T do it on its own
    • Need ENERGY
    Click the image to watch a short animation.
  • CELL DIVISION
    • A process a cell goes through when splitting into two daughter cells (cells that are genetically the same as itself)
    • Process is called Mitosis
    Click the image to watch a short animation.