1. Joke of the Day:
Did you here about the guy who lost his whole left side?
He’s alright now!

2. Unit 2 - CELLS
What is the largest Cell on Earth?

3. Largest Single Cell on Earth?
Ostrich Egg

4. Cytology

5. Centriole

6. Cell Structure and Function

7. Cytology:
The study of Cells

8. The discovery of cells…
In late 1600s, an English scientist, Robert Hooke used a primitive microscope to look at a very tiny slice of cork. He noticed that the cork was made up of "a great many of little boxes" and he called those little boxes "cells".

9. Animal Cell Ribosome (attached) Ribosome (free) Nucleolus Nucleus Cell
Membrane
Nuclear
Envelope
(membrane)
Mitochondria
Smooth
Endoplasmic
Reticulum
Rough
Endoplasmic
Reticulum
Centrioles
Golgi Complex
Lysosomes

10. Cell Size and Types
Cells, the basic units of organisms, can only be observed under microscope
Three Basic types of cells include:
Animal Cell
Plant Cell
Bacterial Cell

11. Number of Cells
Although ALL living things are made of cells, organisms may be:
Unicellular – composed of one cell
Multicellular- composed of many cells that may organize into tissues, etc.

12. Organelles: Perform various functions inside the cell
Organelles: Perform various functions inside the cell. “little organs” Human Body Analogy

13. Locations are 1) surrounds the cell; 2) in the cytoplasm; 3) in or surrounds the nucleus. DRAWINGS: Draw what each part looks like. FUNCTION: Write down what it does for the cell.
Cell Organelles
Location
Function
Drawing
Cell/Plasma membrane
Cytoplasm
Nucleus
Nucleoli/us
Ribosomes
Golgi apparatus/complex
Mitochondria
Lysosomes
Centrioles
Vesicles
Nuclear Envelope
Chromatin
Rough endoplasmic reticulum
Smooth endoplasmic reticulum
Peroxisomes
Microfilaments
Cilia
Flagella
Microvilli

14. 1. Cell Membrane or Plasma membrane
Controls the passage of materials in and out of the cell.
“Front Door”

15. 2. Cytoplasm (not an organelle- but important)
Fluid portion of
cell where organelles live.

16. 3. Nucleus The control center of the cell. DNA is stored here.
“Supervisor”

17. 4. Nucleolus
Makes ribosomes inside the nucleus
“Factory Workers”

18. 5. Ribosomes Where Protein synthesis takes place
Ribosomes are “free” and/or “attached” to the E.R.
“Manufacturing Plant”

19. 6. Golgi Complex
The protein packaging and transport center of the cell.
“Shipping Department”

20. 7. Mitochondria Converts Glucose to ATP Energy Has it’s own DNA
Double membrane
“Powerhouse!”

21. 8. Lysosome: “Suicide Sacs”: Autolysis: The destruction of cells or tissues by their own enzymes
Contains special enzymes for digestion in the cell.
“Custodians”

22. 9. Centrioles
Manages Cell Division
Also called Spindle Fibers

23. 10. Vesicles
Helps move things in and out of cell
“Shuttle Service”

24. 13./14. Endoplasmic Reticulum
Transports materials throughout the cell.
**Plays a role in synthesis of hormone based steroids and proteins
“Network or Conveyor Belt”

25. Organelles for Cell Model (Use Notes and Book pg 66)
Cytoplasm (Background) White Cell Membrane Black Marker Mitochondria x3 Yellow Free Ribo x2 (small!) Brown
Attached Ribo x3 (small!) Brown Rough (x1) and
Smooth(x1) ER Orange Golgi Apparatus Pink Vesicles X2 Purple Lysosomes x3 Red Nucleus Light Blue Centrioles(1 pair together) Green Nucleolus Dark Blue LABEL EVERYTHING!!!! Black Pen