Cell Theory1. All Living things are made of one or
more cells.
2. All cells come from pre-existing cells– Cell reproduce
• Asexual reproduction
• Sexual reproduction
3. All cells carry out life’s activities – Exchanging O2 and CO2, – Producing proteins– replacing dying/dead cells
Scientists and Cell Theory
• Pasteur -• Redi -• Hooke -• Brown -• Schwann- • Schlieden-• Virchow-• Van Leewuenhoek-
In your Groups!
All cells are characterized as either:
• A prokaryote (prokaryotic)Or
• A Eukaryote (Eukaryotic)
KNOW THESE TERMS!!
A Prokaryotic Cell:• Have genetic material that
is NOT contained in a nucleus
• Genetic material is “floating” in the cytoplasm
• Usually smaller than eukaryotic cells
• Considered the earliest cells
• No membrane bound organelles: nucleus, chloroplast, or mitochondria
A eukaryotic cell:• Genetic material is
contained within the NUCLEUS
• Genetic material is separated form the rest of the cell
• Can be unicellular or Multicellular
Cells can be:• Unicellular – only 1 cell large
• Ex’s bacteria, ameba’s, paramecia
Cells can be
• Multicellular – made of many cells• Can be simple organisms • or complex• Ex. Hydras and humans
Parts of Cells
• Cells contain many internal structures called organelles
• Each organelle performs a specific function vital to life
• Letters A-Q represent cell organelles
Cell Organelles:
• Microscopic structures that make up the cell
• Each organelle performs a specific function for the cell
• Ex of organelles:
– nucleus
– Mitochondria
– Chloroplasts
– Golgi bodies
Differences b/w plant and animal Cell
1. Vacuole:• Plants have 1 large vacuole• Animal cells have multiple smaller vaculores2. Chloroplasts are plants only!!!
(photosynthesis)3. Cell Wall found in plant cells only!!4. Centrioles found in animal cells only!!!5. Shape: boxy shapes = plant
rounded = animal
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