1. Biology Do Now
Directions: Take out a sheet of notebook (Do Now sheet) and, then answer each question.
How does the ability to get energy from food help organisms maintain homeostasis?
How does the ability to respond to stimuli help organisms maintain homeostasis?
How does the ability to reproduce help organisms maintain homeostasis?
How does the ability to grow and develop help organisms maintain homeostasis?

2. Biology Do Now Key
How does the ability to get energy from food help organisms maintain homeostasis? Getting energy from food allows living things to build important nutrients like carbohydrates, lipids, proteins and DNA.
How does the ability to respond to stimuli help organisms maintain homeostasis? Responding to stimuli allows living things to know when environmental changes have taken place, protect the organism from harm.
How does the ability to reproduce help organisms maintain homeostasis? Reproduction allows species to survive and prevent extinction.
How does the ability to grow and develop help organisms maintain homeostasis? Growing and developing allows organisms to reach maturity so they can reproduce through asexual or sexual reproduction.

3. Objective
Students will know the organization/hierarchy of living things by taking notes, brainstorming, watching a video, completing a systems investigation worksheet and a “schools as a system” exit ticketMastery: 75% or better.

4. Homework
How do the cells in a multicellular organism help the organism act like a system? How do the two relate? How do they work together?

5. Engage
Students brainstorm as many “systems” as possible with a partner.
Guiding question: What is a system?

6. Explore
Students will watch “Biological Levels in Biology: The World Tour”
Source:

7. Vocabulary Words Atom Molecule Compound Cell Tissue Organ Organ system
Organism
Population
Community
Ecosystem
Biosphere

8. Levels of Organization
A S c h u l m a n L a b s p r o d u c t i o n

9. Life is organized into 5 levels:
Cells
Tissues
Organs
Organ systems
Organisms
Populations
Ecosystems

10. There are 5 Levels of Organization in Multicellular Organisms:
1. Cells
2. Tissues
3. Organs
4. Organ Systems
5. Organisms
6. Population
7. Ecosystem

11. the CELL
The cell is the basic unit of structure and function of a living thing.
Cells are specialized by size and shape for the job they do
The amoeba above is made of only one cell and it must perform all the jobs of the organism.

12. T I S S U E S
Tissues are made of the same type of cells grouped together to do a specific job.
Examples: 4 different types of animal tissues are epithelial, muscle, nervous, and connective. This pink sponge has only cells but they are not organized into tissues. The blue Man-o-war has tissues but no organs.

13. Organs
Organs are made up of different tissues that work together to do a job.
Example: a heart is an organ made of all four tissues, this coral polyp is an organ and a leaf is a plant organ.

14. Organ Systems An organ system is a group of organs working together.
Example: Human organ systems include circulatory, reproductive, digestive, nervous, respiratory.
Plant organ system-roots, stems,leaves= transport system.

15. Organisms
Sum of all cells, tissues, organs and organ systems makes an organism.

16. Population
A group of the same type of organisms all living together in the same place.

17. Ecosystem
Populations living together in one area.

18. All the ecosystems around the world make up the biosphere.

19. Extend
Students will complete the “systems investigation worksheet parts 1 & 2”.