mRNA production in a plant cell involves DNA strand separation by breaking hydrogen bonds, using one strand as a template, complementary base pairing of RNA nucleotides (A→U, T→A, C→G, G→C), joining by RNA polymerase to form pre-mRNA, and then splicing to remove introns and form mRNA.
Producerea ARNm într-o celulă de plantă implică separarea filamentele ADN prin ruperea legăturilor de hidrogen, utilizarea unei singurenamely matriță, bazarea complementară a nucleotidelor ARN (A→U, T→A, C→G, G→C), unirea cu ARN polimerază pentru a forma pre-ARNm, și apoi splicing-ul pentru a îndepărta intronii și a forma ARNm.
| Front | Describe how mRNA is produced in a plant cell. [5 marks] |
|---|---|
| Back | 1. The DNA strands separate by breaking the H bonds; OR H bonds broken between (complementary) (DNA) bases; 2. (Only) one of the strands/template strand is used (to make mRNA/is transcribed); 3. (Complementary) base pairing so A→U, T→A, C→G, G→C; 4. (RNA) nucleotides joined by RNA polymerase; 5. pre-mRNA formed; 6. Splicing / introns removed to form mRNA; |
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