The document compares and contrasts the characteristics of gram positive and gram negative bacteria. It lists 17 properties including staining, cell wall structure, peptidoglycan layer, presence of outer membrane, resistance to physical disruption, flagellar structure, susceptibility to various antibiotics, and resistance to drying. For each property, it specifies whether gram positive or gram negative bacteria exhibit that characteristic.

1. By:
Arpita Mukherjee

3. Gram Positive
Negative
Hans Christian Gram
PINK/ RED
PURPLE/ VIOLET

4. GRAM NEGATIVEGRAM POSITIVE

5. S.No. CHARACTERISTIC PROPERTY GRAM POSITIVE GRAM NEGATIVE
1 STAINING PURPLE/ VIOLET PINK/RED
2 CELL WALL THICK 20-30 nm THIN 8-12 nm
3 PEPTIDOGLYCAN LAYER MULTI LAYERED SINGLE LAYER
4 TEICHOIC ACID PRESENT ABSENT
5 OUTER MEMBRANE ABSENT PRESENT
6 PERIPLASMIC SPACE ABSENT PRESENT
7 PORINS ABSENT PRESENT
8 LIPOPOLYSACCAHARIDE
CONTENT
LOW HIGH
9 MESOSOMES PROMINENT LESS PROMINENT
10 TOXINS PRODUCED EXOTOXINS ENDOTOXINS

6. S.NO. CHARACTERISTIC PROPERTY GRAM POSITIVE GRAM NEGATIVE
11 RESISTANCE TO PHYSICAL
DISRUPTION
HIGH LOW
12 FLAGELLAR STRUCTURE 2 RING IN BASAL BODY 4 RING IN BASAL BODY
13 CELL WALL DISRUPTION BY
LYSOZYME
HIGH LOW
14 SUSCEPTIBILITY TO
PENICILLIN AND
SULFONAMIDE
HIGH LOW
15 SUSCEPTIBILITY TO
STREPTOMYCIN,
CHLORAMPHENICOL AND
TETRACYCLIN
LOW HIGH
16 RESISTANCE TO DRYING HIGH LOW
17 SUSCEPTIBILITY TO ANIONIC
DETERGENT
HIGH LOW

7. By:
Arpita Mukherjee