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Samenvatting Thema 1 natuurwetenschappen

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Samenvatting thema 1 natuurwetenschappen over cellen

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De cel als bouwsteen van levende
organismen
Organisatieniveaus
- Alle levende organismen zijn opgebouwd uit dezelfde bouweenheid de Cel
Eencellige organismen:
- Alle levensprocessen spelen zich af in 1 cel
Meercellige organismen:
- Verschillende celtypes met elk hun eigen functie
- De mens is meercellig
Organisatieniveaus:
1. Biosfeer 2. Ecosysteem 3. Gemeenschap 4. Populatie 5. Organisme 6.
Stelsel 7. Orgaan 8. Weefsel 9. Cel 10. Celorganel 11. Molecule 12. Atoom

Lichtmicroscopie bouw van cellen
- Dierlijke en plantaardige cellen hebben een grote van 10-100 micrometer
- De lichtmicroscoop kan 2000 keer vergroten
Celmembraan:
- Onderdelen van de cel binnenhoudt
- Ongewenste stoffen buitenhoudt
- Transport van voedingstoffen in de cel toelaat
- Het transport van afvalstoffen uit de cel toelaat
Prokaryoten cellen:
- DNA los in het cytoplasma
- 1-10 micrometer groot
Plantaardige cellen
- Bladgroenkorrels in het cytoplasma
- Kan ook een vacuole zijn

Elektronenmicroscopie bouw van cellen


- Tot 50 miljoen keer vergroten
- Eukaryoten cellen
hebben
celorganellen in
het cytoplasma
Bacterie:

, Plantaardige cel:




Dierlijke cel:

Document information

Study
3rd degree
School year
5
Uploaded on
December 5, 2024
Number of pages
5
Written in
2024/2025
Type
Summary
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