Cell wall of Gram (+) bacterium contains mucopolypeptide

Options

A. `60-70%`
B. `70-80%`
C. `80-90%`
D. `90-100%`

Answer

To answer the question regarding the cell wall composition of Gram-positive bacteria, we can follow these steps:

### Step 1: Understand the Classification of Bacteria
Bacteria are broadly classified into two categories based on their ability to retain the Gram stain: Gram-positive and Gram-negative bacteria.

### Step 2: Learn About the Gram Staining Technique
The Gram staining technique, developed by scientist Hans Christian Gram, differentiates bacteria based on the structure of their cell walls. Gram-positive bacteria retain the crystal violet stain used in the process, while Gram-negative bacteria do not.

### Step 3: Identify the Composition of Gram-positive Bacterial Cell Walls
Gram-positive bacteria have a thick peptidoglycan layer in their cell walls, which is primarily composed of mucopolypeptides.

### Step 4: Determine the Percentage of Mucopolypeptides
The cell wall of Gram-positive bacteria typically contains a significant amount of mucopolypeptides. Based on the information provided, the concentration of this layer is approximately 70 to 80%.

### Step 5: Select the Correct Option
Given the options provided (60 to 70 percent, 70 to 80 percent, 80 to 90 percent, or 90 to 100 percent), the correct answer is 70 to 80 percent.

### Final Answer
The cell wall of Gram-positive bacteria contains mucopolypeptides in the range of **70 to 80 percent**.

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