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samenvatting slides biologie (behaald resultaat: 16/20)

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samenvatting van de slides van het vak biologie

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  • October 12, 2021
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  • 2021/2022
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Samenvatting biologie

Oorsprong van het leven

Figuur 25.7 Analogie volgens uurwerk voor aanduiding van mijlpalen in de evolutionaire
geschiedenis




A. Inleiding tot het ontstaan van leven

1. Leven op aarde ontstond
3.5 – 4 miljard jaar geleden

Figuur 25.0x Vulkanische activiteit en bliksems bij het ontstaan van het eiland “Surtsey”
nabij IJsland

,Figuur . Enkele belangrijke episoden in de evolutie van levende organismen




Ongenummerde figuur (page 514) Evolutionaire klok : Oorsprong van het leven




2. Prokaryoten domineerden de evolutionaire geschiedenis van 3.5 – 2.0 miljard jaar
geleden




Figuur . Vroege (links) en huidige (rechts) prokaryoten

,3. Zuurstof begon te accumuleren in de atmosfeer ca. 2.7 miljard jaar geleden




4. Eukaryotisch leven begon ca. 2.1 miljard jaar geleden




Figuur . Structurele organisatie van eukaryote en prokaryote cellen

, 5. Meercellige eukaryoten evolueerden ca. 1.2 miljard jaar geleden




Figuur . Gefossiliseerde algencellen van ongeveer 1.2 miljard jaar ouderdom




6. Tijdens het vroege Cambrium tijdperk was er een explosieve evolutie van dieren

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