1. Cell Theory
Section 7-1

2. CELL THEORY 1. Cells are the basic units of life
2. All living things have cells
3. All cells come from existing cells

3. CELL THEORY 1. The basic unit of life is the cell. (Hooke)
In 1665, an English scientist named Robert Hooke made an improved microscope and viewed thin slices of cork plant cell walls
Hooke named what he saw "cells"

4. CELL THEORY 2. All living things are made of 1 or more cells.
Matthias Schleiden (botanist studying plants)
Theodore Schwann (zoologist studying animals) stated that all living things were made of cells
Schwann
Schleiden

5. CELL THEORY 3. All cells divide & come from old cells. (Virchow)

6. Types of Cells Prokaryote – has no nucleus or organelles
- usually unicellular (1 cell)
- bacteria & viruses
Eukaryote – has a nucleus and organelles
- usually multicellular (more than 1 cell)
- plants & animals
Both have a cell membrane & cytoplasm

7. PROKARYOTE & EUKARYOTE
Section 7-1
Cell membrane
Cytoplasm
Prokaryotic Cell
Nucleus
Eukaryotic Cell
Organelles
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8. PROKARYOTE VS. EUKARYOTE Venn Diagram
Section 7-2
Prokaryote
Eukaryote
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9. Animal Cell Ribosome (fixed) Ribosome (free) nucleolus nucleus
Section 7-2
Ribosome (fixed)
Ribosome (free)
nucleolus
Cell membrane
nucleus
Nuclear envelope
mitochondria
Rough ER
Smooth ER
Golgi Complex
centriole
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10. Plant Cell Section 7-2 Smooth endoplasmic Vacuole reticulum (free)
Nuclear
envelope
Ribosome
(attached)
(free)
Smooth endoplasmic
reticulum
Nucleus
Rough endoplasmic reticulum
Nucleolus
Golgi apparatus
Mitochondrian
Cell wall
Cell
Membrane
Chloroplast
Vacuole
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11. PLANT CELL VS. ANIMAL CELL Venn Diagram
Venn Diagrams
PLANT CELL VS. ANIMAL CELL
Venn Diagram
Section 7-2
Animal Cells
Plant Cells
Cell membrane
Ribosomes
Nucleus
Endoplasmic reticulum
Golgi apparatus
Mitochondria
Cytoskeleton
Cell Wall
Chloroplasts
Vacuoles
Lysosomes
centrioles
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