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Looking Inside Cells. Cell Wall. The rigid outer layer of nonliving material that surrounds plant cells is the cell wall. Only found in plant cells. Supports & protects. Cell Membrane. Found in plant cells & animal cells Very thin Job – to control what comes in and what goes out.
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Cell Wall • The rigid outer layer of nonliving material that surrounds plant cells is thecell wall. • Only found in plant cells. • Supports & protects
Cell Membrane • Found in plant cells & animal cells • Very thin • Job – to control what comes in and what goes out.
Cell Membrane Plant cellAnimal cell
Organelles • Organelles are the structures/parts inside a cell and have a specific job
Cytoplasm • A clear jelly like substance that keeps all of the organelles from bumping into one another… think of clear jello
Cytoplasm The organelles are inside the cytoplasm.
Now, lets take a look at the organelles that are found inside cells. • You have to have a microscope because they are so small.
Organelle: Nucleus • Nucleus – the control center. • The nucleus directs all activity in the cell. It also controls the growth and reproduction of the cell. • It is round.
Organelle: Mitochondria • The mitochondria makes the energy for the cell (like a power plant) … so it can dance • It is oblong shaped.
Organelle: Ribosomes • Ribosomes act like little factories to produce protein. • They pass protein into the endoplasmic reticulum. Some are found floating in cytoplasm.
Organelle: Endoplasmic Reticulum • The Endoplasmic Reticulum are maze passageways in the cytoplasm. • They carry proteins from one part of the cell to another. • This is very important for the cell to get its protein that it needs. This is like a conveyor belt.
Endoplasmic Reticulum Found close to nucleus It carries proteins( which are made by the ribosomes)…the dots
Organelle: Golgi Bodies • Golgi bodies act like a post office. They package stuff up and send it to other parts of the cell.
Organelle: Vacuoles • Vaculoes are large storage buildings. • Because they help store food, the plant’s vacuole is much larger than the animal’s vacuole.
Organelle: Lysosomes • They are the clean-up crew. • They have chemicals in them that digest the wastes and other bad organelles. • When the cell dies the lysosmes work swiftly with their chemicals and digest the dead cell. • Without lysosomes living organisms would become filled with dead cells.
Organelle: Chloroplast • Chloroplast is only found in plants. • It contains a green pigment called chlorophyll. • They are necessary for plants to make their own food. They capture the sunlight energy.
Check this address out… • http://library.thinkquest.org/06aug/01942/plcells/nuclues.htm • Look at the animal and plant cells
