1. What is the correct level of organization within living systems
What is the correct level of organization within living systems? Be ready to justify your answer. Get out your cards.
A. Cells, Tissues, Organ System, Organs
B. Cells, Organs, Tissues, Organ Systems
C. Cells, Tissues, Organs, Organ Systems
D. Tissues, Cells, Organs, Organ Systems
Bell Work

2. Can I summarize how the different levels of organization are integrated within living systems?
Essential Question

3. Levels of Organization
CELLS
The microscopic unit of structure & function of all living things
Most simple level of organization
Examples: Red Blood Cells, Nerve Cells
Levels of Organization

4. Levels of Organization
TISSUES
A group of cells connected together that all do the same thing
Examples: muscle tissue, epithelial tissue, nervous tissue, & connective tissue
Levels of Organization

5. Levels of Organization
OrganS
A group of tissues layered together that all work together to do the same thing
Examples: heart, liver, brain, skin
Heart image found at
Levels of Organization

6. Levels of Organization
Organisms
A living thing that can carry out all life processes
Most complex level of organization
Circulatory System image found at Person image found at paramecium image found at Tree image found at mushroom picture found at Bacteria image found at Bird image found at
Levels of Organization

7. You have two minutes to summarize how the different levels of organization are integrated within living systems.
Think Pair Share

8. A cell, tissue, organ, system, or organism?
Found: the stomach is part of the digestive tract in many animals
Function: to break down food, and store it to later be absorbed by the intestines
ORGAN
Stomach picture found at

9. A cell, tissue, organ, system, or organism?
Found: the circulatory system is in the human body, as well as many other organisms
Function: It transports oxygen and sugar to all cells within the body
SYSTEM
Circulatory System image found at

10. A cell, tissue, organ, system, or organism?
Found: These are various layers of cells found inside the human body
*epithelial
*nervous
*muscle
*connective
Function: Each of these has its own function, what do you think they are?
TISSUE
Tissue picture found at

11. A cell, tissue, organ, system, or organism?
Found: these are different types of red and white blood cells found in our blood
Function: red blood cells transport oxygen to other body parts, white blood cells fight off diseases
What level is our blood?
CELLS
Blood cells image found at

12. A cell, tissue, organ, system, or organism?
Found: in China
Function: to live and survive in the wild
ORGANISM
Panda picture found at

13. A cell, tissue, organ, system, or organism?
Found: in our brain, our nervous tissue is made up of millions of these
Function: neurons transmit signals to body parts to tell them what to do
CELLS
Nerve cell images found at and

14. A cell, tissue, organ, system, or organism?
Found: All over our bodies
Function: muscles help us to move, pump blood, and support our skeleton
TISSUES
Muscle image found at

15. A cell, tissue, organ, system, or organism?
Found: paramecium are often found in pond water
Function: to live and survive in their environment
ORGANISM
Paramecium image found at

16. A cell, tissue, organ, system, or organism?
Found: Found in many animals as part of the nervous system
Function: sends and receives signals throughout the body
ORGAN
Brain Image found at

17. Human Body Pretest
Use your own notebook paper to answer questions on the human body.

18. Answers to Pretest 1. A 11. D 2. C 12. A 3. D 13. B 4. G 14. D
5. E D
6. B
7. H
8. F
9. B
10.C

19. Exit Ticket
Make of list of three Human Body topics you would like to learn during this unit.