Biology, topic one - cell structure

T1

Cell structure

                                  ANIMAL CELL

PLANT CELL

BACTERIA CELL

-prokaryote, no chloroplast or mitochondria, free DNA

Prokaryotes : single celled organism, free DNA e.g bacteria cell

Eukaryote : have a nucleus, complex e.g plant and animal cell

MICROSCOPY

                         Image size

Magnification = ----------------

                          Actual size

Method : 

1. Add a drop of water to the middle of a clean slide 

2. Cut up onion, separate into layers, use tweezers to peel off the epidermal tissue 

3. Place tissue onto slide

4. Add a drop of iodine solution

5. Place coverslip on and observe

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