1. Cells
A Crash Course

2. Hooke (1665) Leeuwenhoek (1675)
History
Hooke (1665)
Leeuwenhoek (1675)

3. All living things are made of cells
Cell theory
WHO developed cell theory?
Schleiden (1838)
plants
Schwann (1839)
animals
Virchow (1855)
Cells make other cells
WHAT is cell theory?
All living things are made of cells
Cells are the basic unit and structure of all living organisms
Cells only come from existing cells

4. Very simple Ex. Bacteria Complex Ex. Plants, animals and more
Types of cells
PROKARYOTES
EUKARYOTES
Very simple Ex. Bacteria
Complex Ex. Plants, animals and more

5. Any organism that is made of only one cell
Types of organisms
UNICELLULAR
MULTICELLULAR
Any organism that is made of only one cell
Any organism that is made of more than one cell Human = 100 TRILLION!!

6. Organelles that we will focus on:
Cell membrane
Nucleus
Mitochondria
Chloroplast

7. Phospholipid bilayer Controls what goes in and out of a cell
Cell membrane
Phospholipid bilayer Controls what goes in and out of a cell

8. Stores DNA “brains” of the cell Manages cell functions
nucleus
Stores DNA “brains” of the cell Manages cell functions

9. mitochondria
Folded inner membrane Converts energy stored in food into usable energy (ATP) Cellular respiration

10. chloroplast
Stacked sacs (thylakoids) Contain chlorophyll Convert energy in sunlight into energy stored in glucose Photosynthesis

11. Two Types of multicellular organisms
ANIMALS
PLANTS
Cell membrane Nucleus DNA
Cell membrane Nucleus DNA Cell wall Chloroplast

12. Where are cells?
Atom Molecule Biomolecule Organelle Cell Tissue Organ Organ System Organism (body)

13. Where are cells?