Download CH-7 Cells - Newark City Schools

• Robert Hooke - uses the word
“cells” to describe cork.
• Anton van Leeuwenhoek observes tiny microorganisms
with his microscope.
• Matthias Schleiden - “all plants
are made of cells”
• Theodor Schwann - “all
animals are made of cells”
• Rudolf Virchow - Cell Theory
1. All living things are composed of
cells.
2. Cells are the basic unit of structure
and function in living things.
3. New cells come from preexisting
cells.
• All cells have a cell membrane
• All cells are filled with
cytoplasm
• All cells have some sort of
genetic material
• Prokaryotes – using Latin
P&S prokaryote means
before nucleus
• Prokaryotes
–Do NOT have Nucleus or
organelles
–Generally smaller and simpler
–All bacteria are prokaryotes
• Eukaryotes – using Latin
P&S eukaryote means true
nucleus
–HAVE nuclei
–Also have dozens of other specialized
structures called ORGANELLES
–Can be found in single-celled
organisms or multi-celled organisms
–All plants, animals and fungi are
eukaryotes
- No nucleus
- Bacteria
-Cell
membrane
-Cytoplasm
-DNA
-Has
nucleus
-Plants,
animals
and
fungus