mRNA production in a cell nucleus involves helicase breaking hydrogen bonds, a single DNA strand acting as a template, RNA nucleotides attracted according to base pairing rules, RNA polymerase joining RNA nucleotides into pre-mRNA, which is then spliced to remove introns.
Producerea ARNm în nucleul unei celule implică helicaza care rupe legăturile de hidrogen, o singură spirală ADN acționând ca matriță, nucleotidelor ARN atrași conform regulii de împerechere a bazelor, ARN polimeraza unind nucleotidele ARN într-un pre-ARNm, care este apoi splicing-uit pentru a îndepărta intronii.
| Front | Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of a cell. [6 marks] |
|---|---|
| Back | 1. Helicase; 2. Breaks hydrogen bonds; 3. Only one DNA strand acts as template; 4. RNA nucleotides attracted to exposed bases; 5. (Attraction) according to base pairing rule; 6. RNA polymerase joins (RNA) nucleotides together; 7. Pre-mRNA spliced to remove introns; |
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