1. The Different Jobs of Cells2
Cell Organization
Many-celled organisms are not just mixed-up collections of different types of cells.
Cells are organized into systems that, together, perform functions that keep the organism healthy and alive.

2. organelle
Parts of a cell that have a special job found inside in the cytoplasm
Ex. nucleus
vacuole
mitochondria
chloroplast

3. cell Smallest unit of life
Ex. Bone cell, muscle cell, nerve cell, etc.

4. The Different Jobs of Cells2
Tissues and Organs
Cells that are alike are organized into tissue (TIH shewz).
Blood is a Tissue
Tissues are groups of similar cells that all do the same sort of work.

5. Tissues
Ex.
Blood made of blood cells
Bone tissue made of bone cells

6. The Different Jobs of Cells2
Tissues and Organs
Different types of tissues working together can form a structure called an organ (OR gun).
The stomach is an organ that includes muscle tissue, nerve tissue, and blood tissue.
Other human organs include the heart and the kidneys.

7. The Different Jobs of Cells2
Organs Systems
A group of organs that work together to do a certain job is called an organ system.
Organ systems found in your body include the respiratory system, the circulatory system, the reproductive system, and the nervous system.
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8. Organ systems
Nervous system includes the brain, nerves and spinal cord
Respiratory system is the nose, trachea, and lungs

9. Organs Systems 2 Organ systems also work together.
The Different Jobs of Cells 2
Organs Systems
Organ systems also work together.
For example, the muscular system has more than 600 muscles that are attached to bones.
The contracting cells of muscle tissue cause your bones, which are part of the skeletal system, to move.

10. organism
A living thing
Ex. Humans, trees, grass animals

11. Smallest to largest-order from top to bottom tissue, organ system, cell, organism, organ, organelle (cell part)

12. Smallest to largest Organelle (cell part) cell tissue organ
Organ system
organism
population
community
ecosystem
biome
biosphere

13. Question 2 2 Which is the correct order of cell organization?
Section Check 2
Question 2
Which is the correct order of cell organization?
A. cell, tissue, organ system, organ
B. cell, organ, tissue, organ system
C. cell, tissue, organ, organ system
D. tissue, cell, organ, organ system

14. Section Check 2
Answer
The answer is C. Cells are organized into systems that, together, perform functions that keep the organism alive.