GATE BT 2023 • Q38 MCQ • 2 Marks

Section 4: Bioprocess Engineering and Process Biotechnology

Mass transfer in bioprocesses (kLa)

Subtopic: Fundamentals of Mass transfer in bioprocesses (kLa)

Question Statement:

Match the virus in Group I with the type of genome it contains in Group II. Group I Group II P. T4 bacteriophage 1. dsRNA Q. SARS-CoV-2 2. ssDNA R. Pseudomonas phage 6 3. dsDNA S. X174 bacteriophage 4. ssRNA

Options:

  • (A) P-3, Q-4, R-1, S-2
  • (B) P-2, Q-1, R-4, S-3
  • (C) P-4, Q-3, R-2, S-1
  • (D) P-1, Q-4, R-2, S-3

Official Answer Key:

A

Step-by-Step Solution & Explanation

### **Official Solution & Concept Analysis (GATE BT 2023 Q.38)** **1. Governing Concept**: - **Topic**: Virology & Viral Genome Architectures - Matching viral taxa with nucleic acid genomes: - **P. T4 bacteriophage** $\rightarrow$ Contractile myovirus infecting *E. coli*; contains **dsDNA** $\rightarrow$ **3** - **Q. SARS-CoV-2** $\rightarrow$ Coronaviridae; enveloped positive-sense **ssRNA** $\rightarrow$ **4** - **R. Pseudomonas phage $\Phi$6** $\rightarrow$ Cystoviridae; enveloped bacteriophage containing segmented **dsRNA** $\rightarrow$ **1** - **S. $\Phi$X174 bacteriophage** $\rightarrow$ Microviridae; circular **ssDNA** $\rightarrow$ **2** **2. Option Analysis**: - **Option (A) [P-3, Q-4, R-1, S-2] is CORRECT**: Flawless assignment across all four viral genome categories. - **Option (B) is INCORRECT**: Misassigns T4 to ssDNA. - **Option (C) is INCORRECT**: Misidentifies T4 as ssRNA. - **Option (D) is INCORRECT**: Misidentifies T4 as dsRNA. **3. Final Answer**: - **Correct Choice**: **A**

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