1. Plants Cell Vs. Animal Cell
Plant Cell
Has a cell wall and a cell membrane
Has chloroplasts
Big vacuole
Few mitochondria
Animal Cell
Only cell membranes
More mitochondria
Small vacuoles

2. Prokaryote vs. Eukaryote
Only single celled
DNA is not in a nucleus
Called bacteria
Eukaryotes
Most orgnisms are multicellular, some are unicellular
Has DNA in a nucleus
Plants, animals, fungi

3. Cell Specialization All cells start out the same.
As the organism develops it’s cells become different.
They specialize to perform specific functions.
Muscle cells produce more mitochondria and become longer
Nerve cells produce long reaching arms to send messages.
Skin cells become flat and thin.

4. 5 Levels of Organization in Multi-Cellular Organisms
Each level is made up
of the level below it.

5. Level 1 – Cells Cells are the basic unit of life
In multi-cellular organisms, cells become specialized.
Examples: stomach cells, skin cells, liver cells, brain cells, neurons or nerve cells.

6. Level 2 - Tissues A group of similar cells with similar functions.
Examples: Stomach tissue, muscle tissue, intestinal tissue, connective tissue.
Bone cells make bone tissue
Blood cells are part of blood tissue.
Stomach cells make stomach tissues.

7. Level 3 - Organs A group of tissues that work together.
Examples: stomach, heart, kidney.
Heart is made of muscle, nerve, and blood tissues.
Your eyes are made of muscle, nerve, blood, skin, and connective tissue.

8. Level Four: Organ System Groups of different organs that work together.
There are ten organ systems:
Skin--protects the body
Skeletal--support & protect
Muscular--Support & movement
Digestive--recieves, transports, breaks down food.
Circulatory--Transports, oxygen, food, waste.
Respiratory--Exchange of gases in body.
Excretory--Removes waste.
Endocrine--Regulates body functions (hormones)
Nervous--Conducts messages
Reproductive--produces the sex cells.

9. Level 5 - Organism
The entire organism, made of cells, tissues, organs & organ systems.
The average adult human has approximately:
100,000,000,000 cells (100 trillion).
Hundreds of tissues.
Dozens of organs.
10 Organ systems.
1 human

10. A group of tissues that work together.
Cells are the basic unit of life.
Groups of different organs that work together.
A tissue is a group of similar cells with similar functions.
The entire organism
A group of tissues that work together.

11. Level 5 - Organism CELLS ORGAN SYSTEMS TISSUES ORGANISM ORGANS Neuron
Nervous System
TISSUES
ORGANISM
Nerve Tissue
The entire organism
Horse
ORGANS
Spinal Chord

12. Lungs are made of: Lung tissue--helps take in oxygen
How is a specific organ made of separate parts. Relate those parts to the function of the larger system.
Lungs are made of:
Lung tissue--helps take in oxygen
Muscle tissue--Helps move lungs in and out.
Blood tissue--Carries oxygen from lungs to heart.
Nerve tissue--Sends messages to lungs to take in more O2 or less O2.
Cells and tissues help the organ do its job.

13. . How are needs at the cellular level met at the organ and tissue level.
Kidneys
Kidney tissue (nephrons) filters waste from the blood.
Lysosomes digest and package the waste.
The ER transports it out of the cell, and on to the bladder.