1. Cell Unit Test Review

2. Types of Microscopes Simple – one lens Compound – 2 or more lenses
Stereoscopic – 3D and is used for dissections
Electron – 20x – 30,000x magnification

3. Coarse adjustment knob
Diaphragm
Base
Arm
Light source
Eyepiece
Objective Lens
Stage
Fine Adjustment Knob
Stage Clips
Nosepiece

4. Scientists and Their Contributions
Hooke – named cells from a piece of cork (dead plant)
Leeuwenhoek – invented the first microscope and discovered bacteria
Schleiden – said plants are made of cells
Schwann – said animals are made of cells
Louis Pasteur – pasteurization
---first to show that living things come only from living things. His discovery that bacteria spread diseases saved countless lives.

5. The Cell Theory
1. All living things are made of cells. 2. Cells are the basic units of structure and function in living things. (structure = form; function = purpose) 3. Living cells only come from other living cells.

6. What are cells? An organism is made of organ systems.
Organ systems are made up of organs
Organs are made up of tissues
Tissues are made up of CELLS!
Organ System
Organ
Tissue
Cells!!!!

7. Can you remember the function of each?
Cell membrane – allows only certain things into the cell Cell wall – only plants – gives support Nuclear membrane – protects the nucleus Vacuole – stores waste– super huge in plant cells Nucleus – controls the cell – contains DNA

8. Plant Cell
Animal Cell

9. The Difference between Animal & Plant Cells

10. Vocabulary you should know
Prokaryotic cell
Prokaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth.
Bacteria
Bacteria consist of only a single cell
Virus
A virus is a small infectious agent that can only replicate inside the cells of another organism.