0
What physical part of bacteria is responsible for the color difference at the end of the gram staining process?
Wiki User
∙ 10y ago
In Gram positive bacteria it is the cell wall made up of a thick layer of peptidoglycan which holds the stain so that this bacteria can be viewed. Gram negative bacteria have two thin layers of peptidoglycan which loses the stain in the secondary washing, hence their terminology as negative.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Do gram staining divide bacteria into two groups based on difference in the composition of their DNA?
no. it's their cell walls.
Why is it important to immobilize the bacteria on a slide prior to staining?
to view
What is the value of gram staining?
Gram staining is highly valuable. It allows us to identify two widely different bacteria. Gram staining can tell you if the bacteria is pathogenic or if a penicillin pill can cure it. It tells us gram-positive bacteria, or gram-negative. Positive being easily combated bacteria and some even helpful, and gram-negative being primarily pathogenic.
Bacterial smears are fixed before staining to?
affix the cells to the slide and to kill bacteria
What is the staining process for separating bacteria?
This is known as a gram test.
Do gram staining divide bacteria into two groups based on difference in the composition of their DNA?
no. it's their cell walls.
Is staining a material a physical change?
Staining is a chemical process.
What is the purpose of differential staining?
differential staining is a staining technique used to stain colorless bacteria against a dark background.
Is gram staining special staining?
yes it is a special staining like other types....its importance is that one can identify the type of bacteria........
Describe the microscopic appearance of encapsulated streptococcus if stained with safranin?
Safranin (red) is used in gram staining and endospore staining as the secondary stain. Nigrosin is used in negative staining, staining only the background and not the bacteria. Therefore, the bacteria within the capsule would stain red from the safranin. (Like in endospore staining and negative gram staining, safranin would stain the bacteria red.) Nigrosin would stain the background of the organism just as it would in negative staining. Bacteria (within capsul): stained safranin red Capsule (outer layer of bacteria): clear Background of organism: stained dark with Nigrosin
What is the advantage over the simple stain?
Gram staining highlights different bacteria types through the use of special dyes. It aids in the diagnosis of a specific organism and tells the difference between gram negative and gram positive bacteria. Simple staining is unable to highlight the exact organism.
What is the advantage of the gram stain over simple stains such as methylene blue?
Gram staining highlights different bacteria types through the use of special dyes. It aids in the diagnosis of a specific organism and tells the difference between gram negative and gram positive bacteria. Simple staining is unable to highlight the exact organism.
What types of organisms are subjected to Negative Staining Technique?
Bacteria .
Why is it important to immobilize the bacteria on a slide prior to staining?
to view
What staining procedure will be used to observe bacteria in the sputum sample?
acid fast staining or Ziel Neelson staining for observing Mycobacteria tuberculosis or Koch bacilli from sputum sample.
Why is it imortant to immoblize the bacteria on the slide prior to staining?
to kill cells
Why was koch's recommemdation for fixing and staining important for microbiology?
Koch's recommendation for fixing and staining is important for microbiology even though all bacteria can be seen under the microscope, because staining and fixing is needed in order to see inside of a transparent bacteria.
