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samenvatting Genie Biologie 5.2 - thema 2, hoofdstuk 3

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thema 2, hoofdstuk 3: celademhaling volgt de structuur van het boek gebruik van afbeeldingen en schema's

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Institution
Secondary school
Study
3e graad
Course
School year
5

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Uploaded on
December 8, 2024
Number of pages
5
Written in
2023/2024
Type
Summary

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CELADEMHALING
1. CELADEMHALING EN FERMENTATIES
 Ademhaling:
o Opnemen O2, afgeven CO2
o =gaswisseling, uitwendig aspect
 O2 -> cellen -> oxidatie van voedingstoffen, met productie van ATP
o =celademhaling, inwendige ademhaling, aerobe energieproductie,
aerobe dissimilatie



Oxidatie in
cellen

voedingssto
 Poly- en  ffen
Monosachariden  55 – 63%
disachariden  Glycerol en vetzuren  35-25%
 Lipiden  aminozuren  10-12%
 proteïnen
%
totale
voedselbesta
nddelen

Spijsvertering in
spijsverteringska



 Glycolyse: glucose -> 2 moleculen pyrodruivenzuur
 Met O2 =aerobe celademhaling
o CO2
o Citroenzuurcyclus / krebscyclus
o Elektronentransportketen (= oxidatieve fosforylering)
 Zonder O2 = anaerobe celademhaling
o = fermentatie of gisting




Het verloop van de oxidatie van glucose
 3 fasen
o 1 Glycolyse
o 2 Citroenzuurcyclus of krebcyclus
o 3 eindoxidatie



2 Glycolyse

, glucose

2 ATP



2 (ADP + P)




C3 C3 NAD+
NAD+
NADH +
NADH +
H+
H+

2 (ADP +
P) 2 (ADP + P)

2 ATP 2 ATP


Pyruvaat (C3)
Pyruvaat (C3)


C6H12O6 + 2(ADP + P) + 2NAD+
 2 pyruvaat + 2 ATP + 2(NADH + H+)


3. DECARBOXYLERING VAN PYRODRUIVENZUUR
 Pyrodruivenzuur naar matrix mitochondrion
 Decarboxyleren = CO2 afsplitsen
 C3 -CO2 = C2
 C2 + co-enzym A = acetyl-CoA
 Ontstaan van NADH




4. KREPLERCYCLUS

Pyruvaat (C3)
NAD+
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