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Samenvatting Nectar 2-3 vwo werkboek A, ISBN: 9789001879990 Biologie - hfst 8.1, 8.2 en 8.3

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Deze samenvatting gaat over hfst 8 van Nectar boek 2-3 vwo. Paragraaf 1,2 en 3 worden behandeld. #biologie #nectar #vwo #ademhaling #hetwerkt #hethart

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Summarized whole book?
No
Which chapters are summarized?
Hoofdstuk 8
Uploaded on
February 8, 2023
Number of pages
3
Written in
2021/2022
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Summary

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Biologie samenvatting hfst 8.1, 8.2 en 8.3


8.1
Orgaanstelsels (bron 2)

● Verteringsstelsel: voedsel klein maken, zodat de voedingsstoffen naar je
bloed kunnen gaan.
● Ademhalingsstelsel: zuurstof opnemen in je bloed en koolstofdioxide afgeven
aan de lucht.
● Bloedvatenstelsel: stoffen zoals voedingsstoffen, zuurstof en koolstofdioxide
vervoeren.
● Uitscheidingsstelsel: afvalstoffen uit je bloed verwijderen en buiten je lichaam
brengen.
● Zenuwstelsel: organen laten werken en laten samenwerken.
Energie door verbranding (bron 3 en 4)

● Je cellen krijgen energie door verbranding:
glucose + zuurstof → energie + koolstofdioxide + water
● Glucose bevat energie. Zuurstof is nodig om glucose te verbranden, zodat
energie vrijkomt.
● Afvalstoffen van de verbranding raakt je lichaam als volgt kwijt:
– koolstofdioxide door je longen
– water door je nieren (urine), huid (zweet) en longen (uitademen)
● Energie gebruik je onder andere voor: beweging, warm blijven, denken,
stoffen maken en stoffen afbreken.




* Cellen (bron 5)

● Celmembraan: buitenkant van de cel. Laat bepaalde stoffen passeren en
andere niet.
● Cytoplasma: water met opgeloste stoffen.
● Cellen bestaan uit organellen:
– celkern: bevat DNA met ‘recepten’ voor eiwitten; regelt alles in de cel
– ribosomen: produceren eiwitten
– endoplasmatisch reticulum: vervoeren eiwitten
– mitochondriën: maken energie vrij uit glucose
8.2
Ademhalen (bron 3)
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