Parts+that+make+up+Organs+and+Tissues

Each organ in your body is made of two or more kinds of tissue. A **tissue** is a group of cells that look alike and work together to do a certain job. **Cells** are the basic units, or building blocks, of the human body. In fact, all living things are made of cells.Your body has millions and millions of cells. Cells are tiny. To see a cell, you must look through a microscope. You have hundreds of different kinds of cells in your body. Muscle cells, nerve cells, and bone cells are three examples.

== **1- Why are cells important?**  **Leen: L iving things are made up of cells and are the basic building blocks of the human body. ** ==

[Dalia] All living things are made up of cells and they are the basic building blocks of the human body.


 * Jida: Cells are the basic units of the human body.**

== **2- Why are microscopes used to look at cells?** **Leen: Cells are too small to be seen by eyes without microscopes, therefore you need them to perform this task. **  == [Dalia] Cells are too small to see with the naked eye, so you need microscopes to do so.


 * Jida: cells are too small and microscopic thats why we use a microscope.**

**3- What other words do you know that start with the prefix //micro-//?**
**Leen: micro-biology, micro-organisms, micro-scopic, microbe** [Dalia] Macrobiotics, microcosm, microbe, microbiology...

Jida: micro -organism, micro-cellular, micro-organisms , microscopre...