Unit 1: Cells and Heredity Chapter 1: The Cell Chapter 2: How Cells Function Chapter 3: Cell Division Chapter 4: Patterns of Heredity

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Unit 1 Cells and HeredityChapter 1 The
CellChapter 2 How Cells FunctionChapter 3
Cell DivisionChapter 4 Patterns of Heredity

• The BIG idea
• All living things are made up of cells
• Key Concepts
• 1.1 The cell is the basic unit of living things
• 1.2 Microscopes allow us to see inside the cell
• 1.3 Different cells perform various functions

TAKE NOTES!!!
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1.3 Different Cells Perform Various Functions

• How organisms are classified into three domains
• Specialization in multicellular organisms
• How cells, tissues, and organs are organized

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1.2 Review

• 1) What advantages and disadvantages does a light
  microscope have in comparison with an electron
  microscope?
• -A light microscope can view live specimens but
  can only magnify 1000x
• 2) What is the difference between a eukaryotic
  cell and a prokaryotic cell?
• -Eukaryotic has DNA in nucleus. Prokaryotic has
  DNA throughout the cytoplasm
• 3) What organelles can be said to act like an
  assembly line within a cell?
• -The Endoplasmic reticulum uses materials from
  ribosomes to make proteins and cell membrane
  parts. Vesicles take those materials to the
  Golgi apparatus, which finishes processing them.

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More Review

• A cell with no nucleus?
• Prokaryotic
• A cell with a cell wall and a nucleus?
• Plant Cell
• A device for viewing microorganisms?
• Microscope

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Explore Specialization

• Roots vs Leaves
• The color of the roots are white and brown, the
  leaves are green.
• Leaves contain chloroplasts, a chemical that
  gives them their
• green color, and can
• produce sugar.

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Organisms can be classified by their cell type

• 2-3 million bacteria living on each cm2 of your
  skin!
• Most organisms on Earth are single celled.
• Unicellular organisms were recently found in the
  least expected place in very extreme conditions.

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Organisms can be classified by their cell type

• Archaea
• Found in the deep oceans thermal vents extreme
  heat and no oxygen, salty waters of Great Salt
  Lake, and in hot sulfur springs of Yellowstone
  Park

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Domains Archaea and Bacteria

• First known as archaebacteria ancient bacteria
• Many of these organisms are found in ancient
  Earth-like environments (similar to hydrothermal
  vents)
• Archaea are genetically different from bacteria
• Both unicellular organisms made of prokaryotic
  cells
• Cytoplasm contains ribosomes but no organelles
  simple!
• Tough cell wall

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Eukarya (3rd Domain)

• Nucleus!
• Almost all multicellular organisms
• Many unicellular organisms protist (ameoba,
  paramecium, euglena)
• For most Eukaryotes, no single cell can survive
  on its own

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Three Domains of Life
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Specialization

• Specific cells perform specific functions
• Blood cells, muscle cells, nerve cells (neuron),
  etc
• Plant cells for photosynthesis, draining water
  from soil, supporting plants weight

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Cells work together

• Cell City!
• They way cells work together and interact depend
  on the organism - organization
• Simple sponge certain cells take in food, other
  digest it regeneration

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Cells work together

• More advanced cells specialize AND group
  tissues
• Organized to do a specific job
• Hand can see top layer of tissue
• Tissue working together to perform a particular
  function organ
• Eye (to see)
• Leaf provides energy and materials has tissue
  that uses Suns energy to make sugar, and tissue
  moving sugar to other parts of the plant

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Cells, Tissues, Organs

• All work together
• Organs working together to form organ systems
• Plants roots, stems, leaves
• Humans 11 organ systems, of 40 organs and 200
  types of tissues.
• Nervous system brain, spinal cord, nerves,
  sensory organs (eyes and ears)
• Specialized cells make up tissue
• Tissues act together to form an organ
• Different organs serve a common function (like
  digestion)

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Highest level of organization
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For Practice - Sketch

• Please sketch both an animal cell and a plant
  cell, including the organelles listed in on the
  cells alive website. Be sure to label your
  diagram, and include a scale for reference. This
  should be a biological drawing, meaning
• 1. Use unlined paper.
• 2. Always use a pencil (for this colored pencils
  are okay).
• 3.  Print all words.
• 4. All labels written horizontally.
• 5. Center the title at the top of the diagram and
  print in all capital letters.

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Math in Science p.25(NOT ON TEST)

• To write a number in scientific notation
• Put the decimal after the first digit and drop
  the zeroes.
• In the number 123,000,000,000 The coefficient
  will be 1.23
• To find the exponent count the number of places
  from the decimal to the end of the number.
• In 123,000,000,000 there are 11 places. Therefore
  we write 123,000,000,000 as

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Math in Science p.25

• 1) An oxygen atom measure 14/100,000,000,000 of a
  meter across. Write the width of the oxygen atom
  in standard form as a decimal number
• 0.00000000014
• 2) Write the width of the oxygen atoms in
  scientific notation
• 1.4 x 10-10m

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Math in Science

• 3) A chloroplast measure 5 millionths of a meter
  across. Write its width in standard form and in
  scientific notation
• 4)A redwood tree stands 100 meter tall. There
  are 1000 millimeters in a meter. Express the
  height of the redwood tree in millimeters. Write
  the number in scientific notation.
• 5) A typical plant cell measures 1 millionth of a
  meter in width. Express the width in standard
  form and in scientific notation