2. Have you known that prof. Ahmed Zewail is trying with his team in USA to
explore “4d” Microscope !
3. According to what have we studied last session .. Respiratory
system
• What are the organs of the respiratory system ?
• What are the biggest organs in the reparatory system?
• What are the smallest particles of the respiratory system?
33. Unicellular organisms
They are Micro – organisms.
They cant be seen with naked eye.
Their body consists of one cell such as :
I. Amoeba.
II. Paramecium.
III. Euglena.
IV. Bacteria.