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Cells: why they are important

Cells: why they are important. All living things are made of one or more cells. Cells are the smallest functional unit of living things. The basic unit of life The structure and function of cells relates to the structure and function of the entire organism. Types of Cells.

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Cells: why they are important

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  1. Cells: why they are important • All living things are made of one or more cells. • Cells are the smallest functional unit of living things. • The basic unit of life • The structure and function of cells relates to the structure and function of the entire organism.

  2. Types of Cells • Prokayrotic  Bacteria • Eukaryotic  Everything else • Plants • Animals • Fungi • Algae • protists

  3. A Prototypical/Generic Cell

  4. 3 Major Eukaryotic Cell Parts The major parts of the cell include • Plasma membrane — the outer boundary of the cell, controls/regulates what enters or exits cell • Cytoplasm — within PM, performs most cell activities • Nucleus— contains & protects DNA; “control center” of cell Plasma Membrane Cytoplasm Nucleus

  5. You will observe and compare the VISIBLE structure among: • Human Cheek Cell (animal cell) • Elodea Cell (plant cell) • Onion Cell (plant cell) • Have one person at each table set up different slide and then look at eachothers microscopes.

  6. Human Cheek Cell—animal cell

  7. Elodea Cell: a plant cell(from leaf/above ground part of plant)

  8. Onion Cell: plant cell (from below ground plant part)

  9. Plant Cell Parts Cell Wall Cell/Plasma membrane Vacuole Chloroplast Nucleus

  10. Euks v. Proks Eukaryotic Prokaryotic Very small No nucleus, DNA ‘exposed’ Very few organelles • Large • DNA within nucleus • Many different organelles Typical eukaryotic cell Typical prokaryotic cell

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