1. How Living Things Are Alike Ch.1 Lessons 1-3

2. L. 1 What is the Basic Unit of Life Objectives: – I can describe a cell and explain some of its functions. – I can explain what tissues are. – I can explain what organs are.

3. L. 1 Vocab Cells – The basic unit of life Microscope – An instrument used to magnify things. Electron microscope – An instrument that uses a beam of tiny particles called electrons

4. L. 1 Vocab Cont Organelle – A tiny structure inside a cell. Tissue – A group of cells that are similar and work together Organ – A group of different tissues that work together

5. Cells All living things are made of cells. A cell is the basic unit of life. Cells carry out many functions, or jobs. Some cells specialized to do specific functions.

6. Different cells Skin cells: Muscle cells: Bone cells: Nerve cells: Blood cells:

7. Observing Cells Cells come in different sizes Most cells are invisible to the naked eye. Those cells can only be seen with a microscope

8. Microscope Microscopes are like magnifying glasses that we use to look at ants that may look like a black dot.

9. Electron Microscopes

10. Tissues Group of cells that are similar and act together are tissues. What are some examples: * Talk to your partners*

11. Organs Let’s look together Then right it on here.

12. SELF CHECK 1. What are cells? 2. What are two functions of cells? 3. What are tissues made of? ------------------for others to do------------ 4. What are organs made of? 5.Name four organs?