Date: May 11th, 2017
Aim # 42: What is the cell theory?
Do Now:
1) What do we call living things that are made up of one
cell?
2) What do we call living things that are made up of
many cells?
HW:
1) Test next Thursday on Life Functions,
Microscopes, Cell Theory and Organelles 
I. Main Ideas of Cell Theory
 Cell Theory states that
1.All living things are made of cells
Name any living thing, I’ll show you its cells
2. Cells are the basic units of structure and
function in organisms
oStructure and function are related
https://vimeo.com/37432287
CNIDOCYTE
NERVE CELL
GUARD CELL
SPERM CELL
EGG CELL
3. All cells come from preexisting cells
oCell Division
www.youtube.com/watch?v=4OpBylwH9DU
Anton Van Leeuwenhoek
1600s
• Developed simple
light microscopes that
allowed him to
examine tiny living
organisms he called
“animacules”
Robert Hooke
1665
What is this?
First compound
microscope
Cork Cells
First person to use the word
“cell”
Matthias Schleiden
1838
• ALL PLANTS ARE
MADE UP OF
CELLS!!
Theodor Schwann
1838
• ALL ANIMALS
ARE MADE UP OF
CELLS!!
Rudolf Virchow
1858
• CELLS COME FROM
PRE-EXISTING CELLS!
A Brief History of Cells
https://app.discoveryeducation.com/learn/videos/0F
349698-ABEF-46B6-BC7C5E2162505768?hasLocalHost=false
II. Basic Types of Cells
 All cells contain organelles: specialized
structures that carry out life functions
oMany organelles have a membrane
1. Prokaryotes: cells that do not contain
membrane-bound organelles
oMost unicellular organisms are prokaryotic
cells (bacteria, archaea)
Syphillis-causing Treponema palidium
Fecal sample of Gut Flora
Extremophillic Archaea
oSmaller, less complex
oThe first cells were prokaryotes
2. Eukaryotes: cells that contain membranebound organelles
oSome unicellular and all multicellular
organisms are made of eukaryotic cells
(protists, fungi, plants, and animals)
learn.genetics.utah.edu/content/cells/scale/
oLarger, more complex
oMost importantly, eukaryotes contain a
nucleus: the central membrane-bound
organelle that controls cell function
IV. Multicellular Organization
A.
B.
C.
D.
E.
Organelles make up cells
Cells make up tissue
Tissue make up organs
Organs make up organ systems
Organ Systems make up organisms
CELL
TISSUE
ORGAN
ORGAN SYSTEM
ORGANISM
Date: May 11th, 2017
Aim # 42: What is the cell theory?
Do Now:
1) Name the two types of cells we discussed yesterday
and describe how they are different. Provide examples
of each!
HW:
1) Test next Thursday on Life Functions,
Microscopes, Cell Theory and Organelles 
Brain Pop: Cells
https://www.brainpop.com/health/bodysystems/cell
s/