GATE BT 2011 • Q20 MCQ • 1 Mark

Section 2: General Biotechnology

Biomolecules, enzyme kinetics

Subtopic: Fundamentals of Biomolecules, enzyme kinetics

Question Statement:

Gas vacuoles are specialized proteinaceous intracellular nano-compartments present in aquatic prokaryotes for buoyancy regulation, found in:

Options:

  • (A) cyanobacteria
  • (B) fungi
  • (C) yeasts
  • (D) protozoa

Official Answer Key:

A

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE BT 2011 Q.20)** **1. Governing Concept & Syllabus Classification**: - **Section**: Biotechnology - **Question Type**: **MCQ** (1 Mark) - **Core Topic**: Biochemistry, Microbiology & Molecular Biology **2. Detailed Step-by-Step Analytical & Scientific Derivation**: - **Systematic Conceptual & Option-by-Option Evaluation**: - Problem Focus: *"Gas vacuoles are specialized proteinaceous intracellular nano-compartments present in aquatic prokaryotes for buoyancy regulation, found in:..."* - **Option (A) [CORRECT]**: *"cyanobacteria"* - Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required. - **Option (B) [INCORRECT]**: *"fungi"* does not satisfy the precise boundary conditions or molecular specificity. - **Option (C) [INCORRECT]**: *"yeasts"* does not satisfy the precise boundary conditions or molecular specificity. - **Option (D) [INCORRECT]**: *"protozoa"* does not satisfy the precise boundary conditions or molecular specificity. **3. Final Answer / Verification Summary**: - **Official GATE Answer Key**: **A** - **Scoring Criteria**: 1 Mark (Negative marking: -0.33 marks).

Practice This in Real CBT Exam Interface

Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.

Launch CBT Mock Test