1. Mrs. Wharton’s Science Class
CELL THEORY
Mrs. Wharton’s Science Class

2. Cells
Cells are the basic unit of structure and function of all living things
The invention of the microscope made it possible for people to discover and learn about cells.

3. Scientists
Hooke- coined the term “cell” by looking at pieces of cork under a microscope.
Leeuwenhoek- built a simple microscope. Also observed pond water as well as teeth scrapings under the microscope.
Schleiden and Schwann- concluded all living things are composed of cells.

4. Cell Theory All living things are composed of cells
Cells are produced from other cells
Cells are the basic unit of function and structure of all living things.

5. Organelles Organelle- a tiny structure found inside a cell
Cell- Smallest living structure
Cell wall- a rigid layer of non-living matter that surrounds a plant cell
Cell membrane- controls substances that go into and out of cells

6. Organelles Nucleus- Brain of the cell, Contains the cell’s DNA.
Cytoplasm-Produces energy ofr the cell. Builds and transports materials, and stores and recycles wasts. ( jelly-like material)
Chromatin- contains genetic material- found inside nucleus.
Mitochondria- Produces energy “POWERHOUSE” of the cell.

7. Organelles
ER- Endoplasmic Reticulum- carries proteins throughout the cell.
Ribosome- produces proteins
Vacuoles- stores food for the cell.
Lysosome- breaks down food and recycles old parts
Chloroplast-responsible for photosynthesis in plant cells.

8. Cells
Cell Organelles