Question

Q.21) Write the difference betw. Gram Positive and and gram negative Bacteria?​

Answer 1

Answer:

Gram positive bacteria have a thick peptidoglycan layer and no outer lipid membrane whilst Gram negative bacteria have a thin peptidoglycan layer and have an outer lipid membrane.

The gram-positive bacteria retain the crystal violet colour and stains purple whereas the gram-negative bacteria lose crystal violet and stain red. Thus, the two types of bacteria are distinguished by gram staining. Gram-negative bacteria are more resistant against antibodies because their cell wall is impenetrable.

Answer 2

Answer:

Gram Positive and and gram negative Bacteria- Difference

Explanation:

Gram Positive bacteria:

1. A single-layered, smooth cell wall.
2. The thickness of the cell wall is 20 to 80 nanometres
3. Presence of teichoic acids
4. Lipid content  is Very low

Gram negative bacteria:

1. A double-layered, wavy cell-wall
2. The thickness of the cell wall is 8 to 10 nanometres
3. Absence of teichoic acids
4. Lipid content  is 20 to 30%

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