Question

Gram-positive bacteria differ from Gram- negative bacteria in the structure of them
(A) Nucleoid/ genophore
(B) Cytoplasm
(C) Cell wall
(D) Ribosomes

Answer 1

Hint: Gram stain test is the method in which violet radiation is made to pass through the bacteria. In this test, if the bacteria give the positive result they are called as gram positive bacteria and if the bacteria provide the negative result, they are the gram negative bacteria.

Complete Answer:

Characteristics	Gram positive bacteria	Gram negative bacteria
Gram stain test	After the gram stain test, they appear in the purple color even after washing the crystal violet radiation with the alcohol.	After the test, they do not stain the color of the incident radiation and hence they appear as pink color.
Cell wall	These bacteria have the smooth and single layered cell wall.	They possess wavy multilayered cell walls.
Thickness of cell wall	The cell wall thickness ranges from 20-80 nanometers.	These have thin cell walls and their size ranges from 8-10 nanometers.
Structure of Flagella	They have two basal rings in their body and have very low lipid content.	They have four basal rings and have comparatively high lipid content.
Toxin	They produce only exotoxins.	They secrete both endo and exotoxins.
Response to antibiotics	They are more susceptible to antibiotics.	They are not weak and are more resistant to antibiotics.
Example	Staphylococcus, Bacillus anthracis accept the violent radiation and appears as purple colored.	Escherichia, Cocci shows the pink color in the gram stain test.

Note: When compared to the gram-positive bacteria, gram negative bacteria are more dangerous and harmful by causing certain diseases. This is because they lack a cell wall and hence the body is surrounded by the slime layer that hides them from the antigens.