CELL ORGANELLESUnit 7
Discovery of a Cell
Robert Hooke used a microscope to look at a piece of cork.
He saw little squares that look like prison cells.
Named them cells
Organelle
Cells are made of smaller parts called organelles.
Each organelle has a specific function.
Plants and animal cells have some different organelles.
Cell Membrane Covers the outside of the cell and
controls what enters and exits Only animals and plants
Cytoplasm A jelly like liquid that fills the cell.
Organelles can move around the cell Plants and animals
Nucleus Controls all activities in the cell and
houses the DNA. (brain of cell) Plants and animals
Mitochondrion Changes food and oxygen into
energy. (Power house of the cell) Plants and animals
Vacuole Storage area of the cell. Holds water,
food, and minerals……BIGGER in plant cells
Plants and animals
Vacuoles in Plants
Vacuoles are much larger in plants.
Storing food.
Lysosome Breakdown and recycle material in a
cell (known as the “stomach of the cell”)
Animals
Nuclear Membrane
Controls what enters and exits the nucleus.
Cell Wall Surrounds the cell. Gives the cell
shape and structure. (bones of the cell)
Plants only
Chloroplast Contains chlorophyll that traps
sunlight. Photosynthesis occurs here. Plants only
Plant cell
What do you think the green dots are?
Where on a plant would you find cells like this?
Animal Cells