0
The purple stained bacteria are called gram positive bacteria and retain the stain after washing by having a thick cell wall one one layer of a heavily crossed linked material called peptidoglycan. ( Google that ) The red stained bacteria are gram negative because they posses two thinner layers of peptidogylcan cell wall that that do not hold the gram stain and it is mostly washed away in rinsing the bacterial samples.
What else can I help you with?
What is the different reaction of Gram-negative and Gram-positive bacteria to Gram's stain testing?
Gram-positive bacteria retain the crystal violet stain and appear purple when stained with Gram's stain, because the thick peptidoglycan layer in their cell wall traps the dye. On the other hand, Gram-negative bacteria do not retain the crystal violet stain and appear red or pink after the addition of a counterstain like safranin, due to their thin peptidoglycan layer which is unable to retain the dye.
Which color is common to both the gram stain and the acid-fast stain?
The color common to both the gram stain and the acid-fast stain is red/pink. In the gram stain, Gram-negative bacteria appear red or pink after staining with safranin, while in the acid-fast stain, acid-fast bacteria such as Mycobacterium species retain the red/pink color of carbol fuchsin despite decolorization with acid-alcohol.
What is the conclusion of a gram stain of purple rods and cocci through a microscope?
This is a Gram Stain. If the technique was proper, the red rods are Gram-negative and the purple cocci are Gram-positive. This staining technique is used to help identify various bacteria. The Gram-positive bacteria that are purple hold the stain due to it's layered cell membrane. It contains a peptidoglycan layer that acts as a lattice trapping the crystal violet-Iodine dye complex.
What color is Gram- stain?
Gram- negative bacteria turns red to pink after the gram stain is performed.
Do gram-positive cells carry a net positive charge?
Gram-positive does not refer to a positive charge, but to the purple color of the stain. Gram-negative bacteria do not retain the purple dye and are instead red in color.
What will happen after treating different types of bacteria with a Gram stain?
Some bacteria will appear purple, whereas other bacteria will appear red.
What is there in the structure of bacteria that cause some to stain purple and other to stain red?
The purple stained bacteria are called gram positive bacteria and retain the stain after washing by having a thick cell wall one one layer of a heavily crossed linked material called peptidoglycan. ( Google that ) The red stained bacteria are gram negative because they posses two thinner layers of peptidogylcan cell wall that that do not hold the gram stain and it is mostly washed away in rinsing the bacterial samples.
What color is gram-negative stain?
The color of a gram-negative stain is pink or red. This staining technique is used to differentiate bacteria based on their cell wall composition, with gram-negative bacteria retaining the pink/red color after staining.
Are there any circumstances where Gram positive bacteria stain red and not purple?
Lol. Uni Adelaide HumPer
What differention mean?
It means to see the differences between things. For example some bacteria will stain red and others will stain blue/purple, this differences between them helps us tell them apart.
What does differentating mean?
It means to see the differences between things. For example some bacteria will stain red and others will stain blue/purple, this differences between them helps us tell them apart.
What is the different reaction of Gram-negative and Gram-positive bacteria to Gram's stain testing?
Gram-positive bacteria retain the crystal violet stain and appear purple when stained with Gram's stain, because the thick peptidoglycan layer in their cell wall traps the dye. On the other hand, Gram-negative bacteria do not retain the crystal violet stain and appear red or pink after the addition of a counterstain like safranin, due to their thin peptidoglycan layer which is unable to retain the dye.
Which color is common to both the gram stain and the acid-fast stain?
The color common to both the gram stain and the acid-fast stain is red/pink. In the gram stain, Gram-negative bacteria appear red or pink after staining with safranin, while in the acid-fast stain, acid-fast bacteria such as Mycobacterium species retain the red/pink color of carbol fuchsin despite decolorization with acid-alcohol.
What is the appearance of gram negative bacteria after addition of mordant in the gram stain?
After the addition of mordant in the Gram stain, gram-negative bacteria will appear red or pink under the microscope. This is because the mordant helps to fix the crystal violet stain to the cell wall of gram-positive bacteria, making it harder for the decolorizer to remove it from the thicker peptidoglycan layer of gram-positive bacteria.
What is the conclusion of a gram stain of purple rods and cocci through a microscope?
This is a Gram Stain. If the technique was proper, the red rods are Gram-negative and the purple cocci are Gram-positive. This staining technique is used to help identify various bacteria. The Gram-positive bacteria that are purple hold the stain due to it's layered cell membrane. It contains a peptidoglycan layer that acts as a lattice trapping the crystal violet-Iodine dye complex.
What color is Gram- stain?
Gram- negative bacteria turns red to pink after the gram stain is performed.
What is the advantage of the gram stain over the simple stain?
gram staining differentiates between gram negative and gram positive bacteria by showing different colors. it shows blue or purple like color for gram positive bacteria and red color for gram negative bacteria. where as simple stain gives the same color to all the types of bacteria. hence it is difficult to differentiate between them.
