The Question is from neet-botany biological-classification , and it was created by the author K SURESH KUMAR

Question

Mycoplasma, unique among bacteria, lack a cell wall. This characteristic makes them:

K SURESH KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Bacterial cell wall structure and function
 **Related Topics**: Bacterial cell structure, antibiotic mechanisms, osmotic pressure
 **Prerequisites**: Basic understanding of prokaryotic cell structure and the role of the cell wall.
## SOLUTION PATHWAY
**Given Information**:
  Mycoplasma bacteria lack a cell wall.
**Method & Steps**:
 1. Consider the function of a bacterial cell wall.
  Reasoning: The cell wall provides structural support and protection against osmotic lysis (bursting due to water influx).
  Formula/Rule: None directly applicable, but understanding of osmosis is crucial.
 2. Analyze the consequences of lacking a cell wall.
  Working: Without a cell wall, Mycoplasma are highly susceptible to changes in osmotic pressure.  They are also not susceptible to antibiotics that target cell wall synthesis.
  Key Point: Osmotic lysis is a major concern for cells without cell walls.
 3. Evaluate the options.
  Result: Option C correctly identifies the consequence of lacking a cell wall – resistance to antibiotics targeting cell wall synthesis.
  Verification:  Options A and B are partially true (they are susceptible to osmotic lysis and must maintain osmotic balance), but option C is the most direct and accurate consequence of lacking a cell wall.
 ## OPTION ANALYSIS
A :x:  Highly susceptible to osmotic lysis is true, but not the primary defining characteristic resulting from the lack of a cell wall in the context of the question.
B :x: Unable to survive in isotonic solutions is false.  They can survive in isotonic solutions, but are more vulnerable to changes in osmotic pressure.
C ✓: Resistant to antibiotics that target cell wall synthesis is true and directly addresses the consequence of lacking a cell wall.
D :x: Incapable of any form of motility is false.  Motility is not directly related to the presence or absence of a cell wall.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing the effects of lacking a cell wall with other bacterial characteristics:  Students might mistakenly link the lack of a cell wall to other functions unrelated to the cell wall.
      How to avoid: Focus on the primary function of the cell wall: protection and structural support.
  2.Overlooking the role of antibiotics: Students might not connect the lack of a cell wall to antibiotic resistance.
      How to avoid: Understand how different classes of antibiotics work and their targets within bacterial cells.
 **Quick Tips**:
  1.Remember the primary function of the bacterial cell wall – protection against osmotic lysis and structural integrity.
  2.Associate cell wall synthesis inhibitors with antibiotics targeting bacteria with cell walls.

K SURESH KUMAR · Answer

Highly susceptible to osmotic lysis

K SURESH KUMAR · Answer

Unable to survive in isotonic solutions

K SURESH KUMAR · Answer

The correct Option is "Resistant to antibiotics that target cell wall synthesis"

K SURESH KUMAR · Answer

Incapable of any form of motility

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