#Question id: 39470
#Biochemistry
Regarding antibiotic resistance:
I. Horizontal gene transfer contributes to resistance
II. Plasmids often carry resistance genes
III. Resistance always arises due to mutation only
#Question id: 39471
#Biochemistry
Concerning gut microbiome:
I. It plays a role in immune system maturation
II. It helps in digestion of complex polysaccharides
III. It has no role in neurological health
#Question id: 39472
#Biochemistry
Assertion (A): Penicillin is selectively toxic to bacteria.
Reason (R): It inhibits peptidoglycan synthesis which is absent in human cells.
#Question id: 39473
#Biochemistry
Assertion (A): Antibiotic resistance is a major global health concern.
Reason (R): Overuse and misuse of antibiotics accelerate resistance development.
#Question id: 39474
#Biochemistry
Assertion (A): Microorganisms are ideal model systems for biochemical studies.
Reason (R): They have short generation times and are genetically manipulable.
#Question id: 39475
#Biochemistry
Match the antibiotic with its target:
| Column I (Antibiotic) | Column II (Target) |
| A. Penicillin | 1. DNA gyrase |
| B. Rifampicin | 2. RNA polymerase |
| C. Ciprofloxacin | 3. Cell wall synthesis |
| D. Erythromycin | 4. 50S ribosomal subunit |