
Genregulation bei Prokaryoten und Eukaryoten
Authored by Esther Ungerböck
Biology
11th Grade
Used 13+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Was ist das Hauptziel der Genregulation bei Prokaryoten?
Die Bildung aller Gene gleichzeitig.
Die Herstellung von Genprodukten nur bei Bedarf.
Die Verdopplung der DNA.
Die Erhöhung der Energieproduktion.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Was ist der Operator im Operon-Modell?
Ein Protein, das die Transkription fördert.
Ein DNA-Abschnitt, der als Bindungsstelle für den Repressor dient.
Ein Enzym, das Gene abliest.
Ein Abschnitt, der die RNA-Polymerase kodiert.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welches Substrat aktiviert die Transkription im Lac-Operon?
Glukose
Tryptophan
Laktose
Fruktose
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Was passiert bei der Endproduktrepression im Trp-Operon?
Tryptophan aktiviert die Polymerase.
Tryptophan bindet an den inaktiven Repressor und aktiviert ihn.
Tryptophan wird in Glukose umgewandelt.
Tryptophan hemmt die Bildung von Laktase.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Was sind die drei Hauptbestandteile des Operon-Modells?
Operator, Promotor, Repressor
Operator, Promotor, Strukturgene
Repressor, Strukturgene, RNA
Promotor, RNA-Polymerase, Transkriptionsfaktoren
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Was ermöglicht die Genregulation in Eukaryoten?
Die Bildung identischer Zellen.
Die Differenzierung von Zellen mit unterschiedlichen Funktionen.
Die Verdopplung der DNA.
Die Produktion aller Gene gleichzeitig.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welcher Mechanismus verändert die Raumstruktur der DNA durch das Anheften von Methylgruppen?
Histonmodifikation
Transkription
Methylierung von Cytosinbasen
RNA-Interferenz
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