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Liceo classico Gonzaga Milano Science course From Prokaryotes to Eukaryotes Teacher Maria Elena Scortecci UTILIZZARE SPAZIO PER INSERIRE FOTO/IMMAGIN E.

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Presentation on theme: "Liceo classico Gonzaga Milano Science course From Prokaryotes to Eukaryotes Teacher Maria Elena Scortecci UTILIZZARE SPAZIO PER INSERIRE FOTO/IMMAGIN E."— Presentation transcript:

1 Liceo classico Gonzaga Milano Science course From Prokaryotes to Eukaryotes Teacher Maria Elena Scortecci UTILIZZARE SPAZIO PER INSERIRE FOTO/IMMAGIN E DI RIFERIMENTO LEZIONE

2 2 Microscope diafragm and condenser lens stage revolver eye pieces focus knob light source

3 Scientific classification Prokaryotes (bacteria and archaea) unicellular (cell size 1-10 µm) no nucleus (karyon) and organelles special cell wall single circular cromosome + plasmids aerobic or anaerobic reproduction by fission 3

4 4 Scientific classification Eukaryotes (amoeboroa, fungi, animalia, plantae) uni-multicellular (cell size 10- 100 µm) several pairs of chromosomes in a nucleus many organelles only aerobic sexual reproduction 4

5 5 How to observe cells microscope slides pipettes water dye (i.e. methylene blue) paddle coverslips blotting paper

6 6 Eukaryotes animalia (human buccal mucosa) 6 round cells small blue nucleus cytoplasmic membrane cytoplasm organelles

7 Prokaryotes bacteria (lactobacillus) from yoghurt 7 7 very small cells: 2 µm long form filaments metabolize lactose produce lactic acid no organelles

8 8 Eukaryotes fungi (saccharomyces cerevisiae ) from brewer yeast 8 oval cells nucleuses dividing cells by budding use glucose to produce energy, breathing oxigen

9 9 Eukaryotes plantae (pelargonium) 9 prismatic cells in mutual contact stiff typical organelles: chloroplasts, chromoplasts, amyloplasts no dye, because they are naturally stained cells photosynthetic cells: CO2 + H2O glucose + oxygen

10 10 Eukaryotes plantae 10 cyclamen leaves, with stomata and puzzle shape

11 11 Eukaryotes plantae 11 onion cell

12 12 Eukaryotes plantae 12 stomata cells in Setcrasea

13 13 Eukaryotes plantae 13 tracheides in fennel

14 14 Copyright 2012 © eni S.p.A.


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