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Samenvatting Biochemie - H1 - Inleiding, water, biomoleculen

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Biochemie - samenvatting van hoofdstuk 1: Inleiding, water, biomoleculen

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October 12, 2022
Number of pages
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Written in
2021/2022
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Inleiding – water en biomoleculen - hoe dit instuderen ?

Onderstaande vragen moeten beantwoord kunnen worden : (theorie)

1. Wat is de betekenis van biochemie ?
= Studie vd chemische processen die leiden tot biologisch leven & die dat leven kunnen in stand houden.
= Studie vd complexe processen die zich afspelen in en rond levende cel & vd chemische reacties die daarbij
plaatsvinden.
= biologie x scheikunde

2. Waar bevindt water zich in een plantaardig organisme/dierlijk organisme ?
Plantaardig organisme:
Intracellulair: cytoplasma, vacuolen
Intercellulair: transportweefsel (floëem, xyleem)

Dierlijk organisme:
Intracellulair: 75% (bv. in cytoplasma)
Intercellulair: 25% (bv. bloedplasma)

3. Bespreek de functies van water bij plant en dier ?
 💧als oplosmiddel
 💧als deel ve chemische reactie
 💧als transportmiddel
 💧als warmteregulator
 💧als smeer – en lichaamsvloeistof

Water als oplosmiddel:
- 💧= dipoolmolecule
- 💧= belangrijk oplosmiddel

Water als deel van een chemische reactie:
- Hydrolyse: opname v💧
A + H2O  B + C
- Condensatie: afgeven v💧
A + B  C + H2O

Water als transportmiddel:
- Planten: hout- en zeefvaten
- Dieren: transport v mineralen in bloed

Water als warmteregulator:
- Behoud v lichaamsT° (cte waarde)
- Zweten bij verhoogde lichaamsT°
 = water  doet lichaamsT° weer dalen

Water als smeer – en lichaamsvloeistof:
- Smeermiddel in gewrichten
- hersenvocht




4. Wat zijn biomoleculen ? Welke bestaan er ? Uit welke chemische elementen zijn ze opgebouwd ?
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