How Living Things Are Alike Ch.1 Lessons 1-3. L. 1 What is the Basic Unit of Life Objectives: – I can describe a cell and explain some of its functions.

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Presentation transcript:

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

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.

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

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

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.

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

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

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

Electron Microscopes

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

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

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