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The Gram reaction is used to classify bacteria into two broad categories, Gram positive and Gram negative. The Gram stain characteristics of a bacterium depends on its cell wall components and thickness. The viruses do not have any cell walls or other equivalent. The viruses are too small to be seen by light microscopy, only exception is the Pox virus. So the Gram stain is not appropriate for virus identification. However, if one is able to see papilloma virus through light microscope, these may appear Gram negative. Because the crystal violet dye would be removed by decolorizer, and the counterstain (safranin or carbol fuchsin) would show its color.
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What are the gram reaction of mycobacterium?
Whar are the gram reaction of mycobacterium?Type your answer here...
What might cause a Gram variable reaction?
It might cause reaction in staining and cause accident
What does a gram reaction of a cell refer to?
the Gram reaction is based on the structure of the bacterial cell wall. In Gram-positive bacteria, the dark purple crystal violet stain is retained by the thick layer of peptidoglycan which forms the outer layer of the cell. In Gram-negative bacteria, the thin peptidoglycan layer in the periplasm does not retain the dark stain, and the pink safranin counter stain stains the peptidoglycan layer. In other word,the gram reaction refers to how the cells reacts to the gram-staining process.
Can you distinguish between escherichia and proteus on the basis of gram reaction only not on shape?
no comments
The major criteria used in placing bacteria into different groups is based on differences in?
Biologists separate bacteria into two groups based on their reaction with the gram stain as Gram Positive and Gram Negative bacteria.
What are the gram reaction of mycobacterium?
Whar are the gram reaction of mycobacterium?Type your answer here...
What are some of the reason for a Gram variable reaction?
what are some of the reasons for a gram-variable reaction
What gram reaction do you expect from acid-fast bacteria?
Gram positive
What is the gram reaction of s epidermidis?
Gram positive, coccus shape.
What is the gram stain reaction of strep throat?
Streptococcus pyogenes is gram positive bacteria.
What are the factors that can result in variable gram reaction?
Genetics, Age of culture, type of growth medium, and technique used could result in a gram-variable reaction
What gram reaction would you expect if you used a culture that was growing for 72 hours?
Gram negative
What might cause a Gram variable reaction?
It might cause reaction in staining and cause accident
What does a gram reaction of a cell refer to?
the Gram reaction is based on the structure of the bacterial cell wall. In Gram-positive bacteria, the dark purple crystal violet stain is retained by the thick layer of peptidoglycan which forms the outer layer of the cell. In Gram-negative bacteria, the thin peptidoglycan layer in the periplasm does not retain the dark stain, and the pink safranin counter stain stains the peptidoglycan layer. In other word,the gram reaction refers to how the cells reacts to the gram-staining process.
What is the weight of the human spirit?
22.00 gram
What is the different reaction of Gram-negative and Gram-positive bacteria to Gram's stain testing?
Gram-positive bacteria which take up the stain turn purple, while Gram-negative bacteria which do not take up the stain turn red.
What are some factors that affect human reaction rates?
Factors that affect human reaction rates include age, physical condition, level of fatigue, state of mind, distractions, and presence of drugs or alcohol. Additionally, the complexity of the task being performed can also impact reaction times.
