Discovering+Cells+Notes

__Discovering Cells__

Standard: All living organisms are composed of cells, from one to trillions of cells. Know that: a. All cells function similarly. b. Plant and animal cells have a few differences. c. Genetic material is contained in the nucleus.

1. All living things are made of cells.

2. Structure is how something is made.

3. Function means, what something does.

4. Cells are the basic units of structure and function in living things.

5. All the functions of living things occurs in cells.

6. Cells function similarly in all organisms.

7. Cells are so small they are measured with units that are 1000th of a millimeter.

8. The invention of the microscope and its improvement made it possible for people to learn about cells.

9. Robert Hooke and (LAY vun hook) Anton van Leeunenoek both built their own microscopes and studied cells.

10. Robert Hooke saw empty spaces in cork and called them cells.

11. Anton van Leeunhoek found microscopic organisms in water and describes parts of the cell.

12. Cell theory: a. All living things are made of cells b. Cells are the basic units of structure and function in living things c. All cells are produced from other cells

13. Unicellular – single celled organisms like bacteria

14. Multicellular – organisms composed of many cells

15. Tissue – a group of similar cells that work together at one function/job

16. Organ- a structure with a function that is made of more than one tissues

17. Organ system – a group of organs that work together to perform a major function of the body.