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What to do…
Answer the following question in your journal and write
the page number where you found help!
◦ An animal cell is shown in the diagram below.
Which organelle is identified by X?
A.
B.
C.
D.
centriole
ribosome
Golgi apparatus
endoplasmic reticulum
◦ Standard: 1.1- Identify and
describe the function of the
major plant and animal cell
organelles.
I. Cell History: the men, the legacy
A. The Discovery of the Cell
●Because
there were no instruments to
make cells visible, the existence of cells
was unknown for most of human
history.
●This changed with the invention of the
microscope
B. Early Microscopes
•In 1665, Robert Hooke used an early compound
microscope to look at a thin slice of cork, a
plant material.
•Cork looked like thousands of tiny, empty chambers.
•Hooke called these chambers “cells.”
•Cells are the basic units of life.
• At the same time, Anton van
Leeuwenhoek used a single-lens
microscope to observe pond water and
other things.
• The microscope revealed a world
of tiny living organisms.
Matthias Schleiden
●
German botanist
●
Studies plants
●
States: all plants
are made of cells
Rudolph Virchow
●
German doctor,
biologist,
pathologist, etc.
●
Stated: Animals
come from
animals, plants
come from plants.
Theodor Schwann
●
German scientist –
zoologist
●
Stated: all
animals are
made of cells
Cell theory
1. All living things are made up of one or more
cells.
2. Cells are the basic units of structure and
function in living things.
3. Living cells only come from other living cells.
Structure and Function
A. Levels of organization
Organelles -> cells -> tissue -> organs -> system ->
organism
1. Organelles
● Little
organs that have a
specific function within the cell
2. Cells
● Basic
unit of life
3. Tissue
● Similar
cells working together
for a specific function
4. Organs
● Groups
of different tissues that
work together
5. System
● Organs
working
together to form
specific systems
6. Organism
● The
entire living thing that
carries out basic life functions
and is made of organ
systems.
Levels of Organization
Organisms
Organ Systems
Organs
Tissues
Cells
Organelles
CELL FACT
●
Animal and plants cells are eukaryotic cells.
“eu” = true
True nucleus
●
Bacteria are prokaryotic cells.
“pro” – before
No nucleus
Putting it Together…
◦ Complete the cell organization activity
◦ Complete any missing work from the week
◦ Any work that is not done today is due on MONDAY