Q.37 Match Group I with Group II
| Group I | Group II |
|---|---|
| P. Staphylococcus aureus | 1. Biofilms |
| Q. Candida albicans | 2. Bacteriocins |
| R. Mycobacterium tuberculosis | 3. Methicillin resistance |
| S. Lactobacillus lactis | 4. Isoniazid |
Options:
(A) P-1, Q-4, R-2, S-3
(B) P-2, Q-3, R-1, S-4
(C) P-3, Q-1, R-4, S-2
(D) P-1, Q-2, R-4, S-3
Microbial Pathogens Matching: S. aureus, C. albicans, M. tuberculosis, L. lactis
Staphylococcus aureus links to methicillin resistance (MRSA), while Candida albicans forms notorious biofilms. Mycobacterium tuberculosis targets isoniazid therapy, and Lactobacillus lactis produces bacteriocins.
Correct Answer
Option (C) P-3, Q-1, R-4, S-2 is correct.
P (S. aureus) – 3 (Methicillin resistance); Q (C. albicans) – 1 (Biofilms); R (M. tuberculosis) – 4 (Isoniazid); S (L. lactis) – 2 (Bacteriocins). These represent hallmark clinical/microbiological traits.
Group Matches Explained
S. aureus causes MRSA infections via mecA gene, conferring methicillin/oxacillin resistance in hospitals.
C. albicans, a fungal pathogen, forms biofilms on catheters/implants, enhancing azole resistance.
M. tuberculosis treats with isoniazid, targeting mycolic acid synthesis in cell walls.
L. lactis (now Lactococcus lactis) produces nisin bacteriocins, inhibiting Gram-positives in food preservation.
Option Breakdown
| Option | P (S. aureus) | Q (C. albicans) | R (M. tuberculosis) | S (L. lactis) | Correct? | Reason |
|---|---|---|---|---|---|---|
| (A) | 1 (Biofilms) | 4 (Isoniazid) | 2 (Bacteriocins) | 3 (Methicillin) | No | S. aureus = MRSA, not primarily biofilms; mismatches TB drug |
| (B) | 2 (Bacteriocins) | 3 (Methicillin) | 1 (Biofilms) | 4 (Isoniazid) | No | Wrong traits; C. albicans ≠ MRSA, TB ≠ biofilms |
| (C) | 3 (Methicillin) | 1 (Biofilms) | 4 (Isoniazid) | 2 (Bacteriocins) | Yes | Exact clinical associations |
| (D) | 1 (Biofilms) | 2 (Bacteriocins) | 4 (Isoniazid) | 3 (Methicillin) | No | S. aureus signature is MRSA; lactis makes bacteriocins |
Exam Applications
Memorize: S. aureus (MRSA epidemic), C. albicans (device biofilms), TB (INH first-line), lactis (nisin producer).
Key for NEET/microbiology: links pathogen to signature feature/drug.
Biofilms elevate resistance; bacteriocins offer probiotic potential.
