Sign Up

Have an account?

Sign In

Don't have account,

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.


Have an account?

Sorry, you do not have permission to ask a question, You must login to ask a question.

Need An Account,

Sorry, you do not have permission to ask a question, You must login to ask a question.

Need An Account,

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Search
Ask A Question

Aishna

Begginer
Ask Aishna
0 Visits
Followers
Home/ Aishna/Answers
  1. Asked: September 19, 2024In:

    difference between gram positive and gram negative bacteria.

    Aishna
    Aishna Begginer

    Gram-Positive bacteria Gram-Negative bacteria Cell Wall A single-layered, smooth cell wall  A double-layered, wavy cell-wall Cell Wall thickness The thickness of the cell wall is 20 to 80 nanometres The thickness of the cell wall is 8 to 10 nanometres Peptidoglycan Layer It is a thick layer/ also caRead more

    Gram-Positive bacteria Gram-Negative bacteria
    Cell Wall
    A single-layered, smooth cell wall  A double-layered, wavy cell-wall
    Cell Wall thickness
    The thickness of the cell wall is 20 to 80 nanometres The thickness of the cell wall is 8 to 10 nanometres
    Peptidoglycan Layer
    It is a thick layer/ also can be multilayered It is a thin layer/ often single-layered.
    Teichoic acids
    Presence of teichoic acids Absence of teichoic acids
    Outer membrane
    The outer membrane is absent The outer membrane is present (mostly)
    Porins
    Absent Occurs in Outer Membrane
    Mesosome
    It is more prominent. It is less prominent.
    Morphology
    Cocci or spore-forming rods Non-spore forming rods.
    Flagella Structure
    Two rings in basal body Four rings in basal body
    Lipid content
    Very low 20 to 30%
    Lipopolysaccharide
    Absent Present
    Toxin Produced
    Exotoxins Endotoxins or Exotoxins
    Resistance to Antibiotic
    More susceptible More resistant
    Examples
    Staphylococcus, Streptococcus, etc. Escherichia, Salmonella, etc.
    Gram Staining 
    These bacteria retain the crystal violet colour even after they are washed with acetone or alcohol and appear as purple-coloured when examined under the microscope after gram staining. These bacteria do not retain the stain colour even after they are washed with acetone or alcohol and appear as pink-coloured when examined under the microscope after gram staining.
    See less

Resources & Suggestions

Mains Answer Writing Latest Articles

On: March 8, 2025

Daily Answer Writing Practice Questions (8 March 2025)

Examine the key issues that obstruct the development of port infrastructure in India and outline the recent measures taken by the government to address these challenges. (Answer in 200 words) भारत में बंदरगाह अवसंरचना के विकास में आने वाली विभिन्न ...

On: March 7, 2025 Comments: 0

मानव-वन्यजीव संघर्ष का प्रबंधन

प्रधानमंत्री की घोषणा: मानव-वन्यजीव संघर्ष प्रबंधन के लिए एक समर्पित केंद्र की स्थापना। चुनौतियाँ: जनसंख्या वृद्धि और संसाधनों की प्रतिस्पर्धा। वन्यजीव संरक्षण का महत्व पारिस्थितिक संतुलन और जलवायु अनुकूलन: वन्यजीव पारिस्थितिकी तंत्र को बनाए रखने और जलवायु पैटर्न को विनियमित ...

On: March 7, 2025 Comments: 0

Safeguarding Wildlife, Securing Harmony”

Context: Based on the editorial “Living with animals – the challenges and the solution” published in The Indian Express. Announcement: PM announced a center for managing human-wildlife conflict. (Press Information Bureau (PIB) release or official government announcement.) Importance of Wildlife ...

Explore Our Blog