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EXTRACCIÓ DEL ADN

  De cèl·lules de plàtan
Objectius:
• Utilitzar unes tècniques determinades per
  extreure l’ADN d’un plàtan

• Observar l’estructura fibril·lar de l’ADN
Materials:
•   Vas de precipitats
•   Proveta graduada
•   Tubs d’assaig
•   Batidora (minipimer)
•   Ganivet de serra
•   Colador
•   Paper de filtre
•   Embut
Productes:
•   Plàtan
•   Aigua destil·lada
•   Detergent
•   Sal (NaCl)
•   Líquid de lents de contacte
•   Alcohol fred (etanol 96 graus)
Primer pas:
• Tallar 100g. de plàtan
  amb un ganivet de serra
Segon pas:
• Triturar els 100g. del
  plàtan mentre li afegim
  aigua destil·lada i sal
  fins que quedi tot
  barrejat i així trencar la
  paret cel·lular i les
  membranes plasmàtica i
  nuclear.
Tercer pas:

• Colar la barreja
  obtinguda per facilitar
  l’extracció posterior de
  l’ADN.
Quart Pas:
• Afegir-hi a la mescla
  obtinguda una cullerada
  de detergent per a
  rentar els plats i
  barrejar suaument per a
  acabar de trencar la
  paret cel·lular i les
  membranes (plasmàtica
  i nuclear), prèviament
  iniciat el seu
  trencament per la sal.
Cinquè pas:
• Posar la mescla
  obtinguda al vas de
  precipitats en una
  proveta graduada i,
  posteriorment, afegir
  unes gotes de líquid de
  lents de contacte per a
  eliminar qualsevol
  proteïna existent que
  pogués dificultar
  l’extracció de l’ADN.
Sisè pas:

• Col·lar la substància a la
  qual havíem afegit el
  líquid de lents de
  contacte amb un tros
  de paper de filtre i
  l’ajuda d’un embut a un
  tub d’assaig.
Setè i últim pas:
• Afegim alcohol amb
  molta cura fent que
  aquest caigui per la
  paret del tub d’assaig
  per que aquest ajudi a
  condensar en un mateix
  lloc l’ADN i evitar
  perdre’l.
Observació:
GRÀCIES PER LA VOSTRA ATENCIÓ!

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Extracció del adn

  • 1. EXTRACCIÓ DEL ADN De cèl·lules de plàtan
  • 2. Objectius: • Utilitzar unes tècniques determinades per extreure l’ADN d’un plàtan • Observar l’estructura fibril·lar de l’ADN
  • 3. Materials: • Vas de precipitats • Proveta graduada • Tubs d’assaig • Batidora (minipimer) • Ganivet de serra • Colador • Paper de filtre • Embut
  • 4. Productes: • Plàtan • Aigua destil·lada • Detergent • Sal (NaCl) • Líquid de lents de contacte • Alcohol fred (etanol 96 graus)
  • 5. Primer pas: • Tallar 100g. de plàtan amb un ganivet de serra
  • 6. Segon pas: • Triturar els 100g. del plàtan mentre li afegim aigua destil·lada i sal fins que quedi tot barrejat i així trencar la paret cel·lular i les membranes plasmàtica i nuclear.
  • 7. Tercer pas: • Colar la barreja obtinguda per facilitar l’extracció posterior de l’ADN.
  • 8. Quart Pas: • Afegir-hi a la mescla obtinguda una cullerada de detergent per a rentar els plats i barrejar suaument per a acabar de trencar la paret cel·lular i les membranes (plasmàtica i nuclear), prèviament iniciat el seu trencament per la sal.
  • 9. Cinquè pas: • Posar la mescla obtinguda al vas de precipitats en una proveta graduada i, posteriorment, afegir unes gotes de líquid de lents de contacte per a eliminar qualsevol proteïna existent que pogués dificultar l’extracció de l’ADN.
  • 10. Sisè pas: • Col·lar la substància a la qual havíem afegit el líquid de lents de contacte amb un tros de paper de filtre i l’ajuda d’un embut a un tub d’assaig.
  • 11. Setè i últim pas: • Afegim alcohol amb molta cura fent que aquest caigui per la paret del tub d’assaig per que aquest ajudi a condensar en un mateix lloc l’ADN i evitar perdre’l.
  • 13. GRÀCIES PER LA VOSTRA ATENCIÓ!