Τετράδιο Εργασιών, σελ. 65 - 68.
The animals and plants you see in the pictures vary in shape and size. How tiny can a living organism be, and what do all living organisms have in common?
Τετράδιο Εργασιών, σελ. 65 - 68.
πυρήνας cell
κυτταρόπλασμα cytoplasm
κυτταρική μεμβράνη�cell membrane
πυρήνας cell
κυτταρόπλασμα cytoplasm
κυτταρική μεμβράνη cell membrane
χλωροπλάστες chloroplasts
χυμοτόπια wetlands
κυτταρικό τοίχωμα cell wall
Τετράδιο Εργασιών, σελ. 65 - 68.
Most living organisms are made up of a large number of microscopic cells.
That is why they are called multicellular.
Τετράδιο Εργασιών, σελ. 65 - 68.
Look at the pictures. In the left picture, the skin of the hand looks smooth. In the right picture, you can see a magnified view of the surface of human skin. Discuss with your classmates the cells that make up the skin. Can you identify the main parts of the cell in the picture?
In the image I can see the nucleus, the cytoplasm, the cell membrane.
Τετράδιο Εργασιών, σελ. 65 - 68.
Also look at the picture of the onion. In the left picture you can see the smooth surface of the onion skin. On the right you can see what the skin looks like with the help of a microscope. Locate the parts of the cell here too.
In the image I can see the nucleus, the cytoplasm, the cell membrane and the cell wall.
Τετράδιο Εργασιών, σελ. 65 - 68.
Some microscopic organisms consist of a single cell. That is why they are called unicellular. Some of them are harmful, but others are quite useful. Without them, we would not be able to enjoy yogurt and wine, for example.
Observe the images and discuss with your classmates the usefulness of microorganisms.
Τετράδιο Εργασιών, σελ. 65 - 68.
With the help of microorganisms, milk is fermented and thus yogurt is made.
Τετράδιο Εργασιών, σελ. 65 - 68.
With the help of microorganisms, the must is fermented and thus wine is made.
Τετράδιο Εργασιών, σελ. 65 - 68.
All living organisms are made up of cells. The main parts of cells are the nucleus, the cytoplasm, and the cell membrane. Plant cells also have a cell wall, chloroplasts, and chloroplasts.
Τετράδιο Εργασιών, σελ. 65 - 68.
A product of milk fermentation is cheese and a product of wine fermentation is vinegar.
The fermentation of milk produces yogurt and the fermentation of must produces wine. Can you name another product of the fermentation of milk and one of the fermentation of wine?
Τετράδιο Εργασιών, σελ. 65 - 68.
Cells are very small and cannot be seen with the naked eye. We can only observe them under a microscope.
The body of the child in the photo is made up of about 5 trillion cells. Why can't we see them?
Τετράδιο Εργασιών, σελ. 65 - 68.
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