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Question #46789
The Question
The transgenic 'Flavr Savr' tomato exhibits delayed softening and an extended shelf-life due to the application of antisense RNA technology. Which of the following best explains the precise biochemical and structural consequence of this genetic modification?
Options
- A.
It prevents the translation of polygalacturonase, thereby inhibiting the hydrolysis of α-(1,4)-glycosidic linkages in the pectic polysaccharides of the middle lamella.
- B.
It blocks the transcription of cellulase, preventing the breakdown of β-(1,4)-glycosidic linkages in the cellulose microfibrils of the primary cell wall.
- C.
It utilizes RNA interference to silence ACC synthase, halting ethylene production and the subsequent degradation of structural polysaccharides.
- D.
It inhibits the synthesis of polygalacturonase, which directly prevents the formation of β-(1,4)-glycosidic bonds during the synthesis of new cell wall material.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Cellulose|Pectin|Polygalacturonase
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: This question tests the synthesis of three distinct NCERT chapters: Biotechnology Applications (Antisense RNA), Anatomy of Flowering Plants (Middle lamella composition), and Biomolecules (Polysaccharide linkages).
The common misconception is memorizing 'Flavr Savr = delayed ripening' without understanding the exact biochemical substrate (pectin) and the specific bonds (α-1,4-glycosidic linkages) being protected from hydrolysis.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biomolecules - Class 11 |
| Concept | Glycosidic Linkage Anomeric Specificity |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |