The Question is from neet-botany , and it was created by the author Mr. NARESH KUMAR K

Question

Which specific characteristic of fungal cell walls makes them resistant to degradation by common bacterial enzymes like lysozyme?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
 **Primary Concept**: Fungal cell wall composition and its resistance to lysozyme.
 **Related Topics**: Bacterial cell walls, enzymatic degradation, polysaccharides.
 **Prerequisites**: Basic understanding of cell wall structure in fungi and bacteria, the function of lysozyme.
## SOLUTION PATHWAY
**Given Information**:
  Bacterial enzymes like lysozyme are involved.
  The question asks about fungal cell wall resistance to these enzymes.
**Method & Steps**:
 1. Identify the main component of fungal cell walls.
Fungal cell walls are primarily composed of chitin, a strong, rigid polysaccharide.
  Formula/Rule:  N/A
 2. Understand lysozyme's mechanism of action.
Lysozyme targets peptidoglycan, a component of bacterial cell walls. It breaks down the glycosidic bonds in peptidoglycan.
  Working: Lysozyme's activity is specific to peptidoglycan.
  Key Point: Fungal cell walls lack peptidoglycan.
 3. Relate the composition to resistance.
Because fungal cell walls contain chitin and lack peptidoglycan, they are resistant to the action of lysozyme.
  Result: Chitin is the key characteristic providing resistance.
  Verification: The presence of chitin correctly explains the resistance to lysozyme.
 ## OPTION ANALYSIS
A :x: Cellulose is found in plant cell walls, not fungal cell walls.
B ✓: Chitin is the major structural component of fungal cell walls and is resistant to lysozyme.
C :x: Peptidoglycan is found in bacterial cell walls, not fungal cell walls.  Lysozyme targets peptidoglycan.
D :x: Lignin is found in plant cell walls, providing structural support, not in fungal cell walls.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing fungal cell walls with plant or bacterial cell walls: Remember the key differences in composition.
  2.Assuming lysozyme has broad activity: Lysozyme is specific to peptidoglycan.
 **Quick Tips**:
  1.Remember the key components of different cell walls (chitin for fungi, cellulose for plants, peptidoglycan for bacteria).
  2.Associate lysozyme with peptidoglycan degradation.

Mr. NARESH KUMAR K · Answer

Presence of cellulose

Mr. NARESH KUMAR K · Answer

The correct Option is "Presence of chitin"

Mr. NARESH KUMAR K · Answer

Presence of peptidoglycan

Mr. NARESH KUMAR K · Answer

Presence of lignin

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