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Question #45906
The Question
Baculoviruses (genus Nucleopolyhedrovirus) are narrow-spectrum biocontrol agents that hijack their insect host's cellular machinery to massively synthesize viral polyhedrin proteins, creating a severe 'translational bottleneck'. Regarding this viral hijacking and the host's translation process, which of the following statements is INCORRECT?
Options
- A.
The intense kinetic competition for host aminoacyl-tRNA synthetases reduces the translation rate of host-specific mRNAs.
- B.
The first step of synthesizing polyhedrin involves the aminoacylation of tRNA, which strictly consumes ATP generated by the host cell.
- C.
To ensure rapid polyhedrin production, the virus utilizes its own packaged aminoacyl-tRNA synthetases to bypass the host's charging regulatory mechanisms.
- D.
The actual peptide bond formation during polyhedrin elongation is catalyzed by a ribozyme located within the host's larger ribosomal subunit.
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
Baculovirus|tRNA charging|Host machinery
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse the fact that viruses can carry some specific enzymes (like Reverse Transcriptase in HIV) with the misconception that they carry basic translational machinery.
Failing to recognize that viruses are entirely dependent on host aminoacyl-tRNA synthetases for tRNA charging leads to falling for this trap.
The question tests the absolute reliance of viruses on host translational machinery against the backdrop of a resource-competition scenario.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Molecular Basis of Inheritance - Class 12 |
| Concept | tRNA Charging Accuracy |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |