1. I can explain the function of organelles in the cell.
Objective:
I can explain the function of organelles in the cell.
Agenda:
Notes over The Cell
Organelle Function worksheet
Organelle Debate

2. The Cell
The basic unit of life

3. The Cell Theory states that:
1. All living things are composed of a cell or cells.
2. Cells are the basic unit of life.
_____________________________
-Multicellular: made of many cells
-Unicellular- _________________

4. Why study cells? Cells  Tissues  Organs  Organ Systems Organism
_Hierarchy: Cells are simplest part of an organism
Example:

5. Types of cells Eukaryote animal cells Eukaryote plant cells
Prokaryote bacteria cells
Types of cells
- no organelles
- organelles
Eukaryote animal cells
Eukaryote plant cells

6. Prokaryote Bacteria Most are unicellular Simple _______________
Lack organelles
_________________________________________________________
Cell wall present in all

7. What are bacteria? Single celled organisms Very small
E. Coli O157:H7 can make you very sick.
What are bacteria?
Single celled organisms
Very small
_____________________
Can be found on most materials and surfaces
Billions on and in your
body right now
Streptococcus can cause strep throat.
This E. coli helps you digest food.
USDA NIFSI Food Safety in the Classroom©
University of Tennessee, Knoxville 2006

8. What do they look like? Three basic shapes
___________________________________________
Round shaped called cocci (cox-eye)
_________
Some exist as single cells, others
cluster together
Bacilli
Cocci
Spiral
Cluster of cocci
USDA NIFSI Food Safety in the Classroom©
University of Tennessee, Knoxville 2006

9. Bacteria are ALIVE! What does it mean to be alive?
____________________________________
They need to eat
USDA NIFSI Food Safety in the Classroom©
University of Tennessee, Knoxville 2006

10. How do bacteria reproduce?
Grow in number not in size
Humans grow in size from child to adult
Make copies of themselves by dividing in half
_______________________
USDA NIFSI Food Safety in the Classroom©
University of Tennessee, Knoxville 2006

11. How do bacteria eat?
Photosynthetic bacteria
Some make their own food from sunlight—like plants
___________________
Share the environment around them
Example: The bacteria in your stomach are now eating what you ate for breakfast
Some are warriors (pathogens)
They attack other living things
Example: The bacteria on your face can attack skin causing infection and acne
Harmless bacteria on the stomach lining
E. Coli O157:H7
is a pathogen
USDA NIFSI Food Safety in the Classroom©
University of Tennessee, Knoxville 2006

12. Eukaryotes Mostly multicellular Plants, Animals, Fungi
Distinct organelles for job specialization
_________________________________________________________________
Cell walls present in fungi and plants only
More complex
Membrane bound organelles present

13. Endoplasmic reticulum
Compare and Contrast
Prokaryotes
Eukaryotes
Cell membrane
Contain DNA
Ribosomes
Cytoplasm
Nucleus
Endoplasmic reticulum
Golgi apparatus
Lysosomes
Vacuoles
Mitochondria
Cytoskeleton

14. Advantages of each kind of cell architecture
Prokaryotes
Eukaryotes
simple and easy to grow
can specialize
fast reproduction
multicellularity
all the same
can build large bodies

15. Cells gotta work to live!
What jobs do cells have to do?
make proteins
proteins control every cell function
___________
for daily life
for growth
_____________
growth
repair
renewal

16. The Nucleus Brain of Cell
Bordered by a porous membrane - nuclear envelope.
Cont_____________________________________________
Rod Shaped Chromosomes
Contains a small round nucleolus
produces ribosomal RNA which makes ribosomes.

17. Ribosomes Small non-membrane bound organelles. _____________________
Site of protein synthesis.
___________________
Either free floating or attached to the Endoplasmic Reticulum.

18. Endoplasmic Reticulum
Complex network of transport channels.
Two types:
_________- ribosome free and functions in poison detoxification.
_________ - contains ribosomes and releases newly made protein from the cell.

19. Golgi Apparatus
A series of flattened sacs that modifies, packages, stores, and transports materials out of the cell.
_______________________________________________________________________

20. Lysosomes Recycling Center
Recycle cellular debris
_______________________________________________________________
Internal pH is 5.
Help digest food particles inside or out side the cell.

21. Centrioles Found only in animal cells
Paired organelles found together near the nucleus, at right angles to each other.
_______________________________________________________________
Play a role in cellular reproduction

22. Cytoskeleton Cell membrane Endoplasmic reticulum Microtubule
Microfilament
Ribosomes
Mitochondrion

23. Cytoskeleton Framework of the cell
Contains small microfilaments and larger microtubules.
They support the cell, giving it its shape and help with the movement of its organelles.

24. Mitochondrion Double Membranous It’s the size of a bacterium
_____________________________________________________________________
Produces high energy compound ATP

25. The Vacuole
Sacs that help in food digestion or helping the cell maintain its water balance.
______________________________________________________