color of bacillus megaterium after the mordant is added?
Bacillus magisterium is a bacteria that forms colonies in pairs or chains. The colonies for white circular colonies. They are gram positive.
still purple
Cream to brown
purple
Gram negative, is motile, red pigment and is a bacillus shape
In a gram stain the primary stain is crystal violet. Iodine then sets that dye into the gram positive cells while alcohol washes out the crystal violet from the gram negative cells. Then safranin, which is the counterstain in a gram stain, is used to dye the rest of the bacteria. This is the example I can give you of why a counterstain does not change the look in all the cells. Though safranin stains all the cells, the gram positive cells that were dyed purple from crystal violet don't look pink - only the gram negative do.
Bacterial smears that are undergoing some type of differential staining method are stained with a primary dye. Primary dye typically refers to a Crystal-voilet stain that is used in the gram staining procedure to color all cells purple. After a mordant (iodine-makes the dye complex less soluble), decolorizer, and a counterstain are added to the primary dye, a person can view the slide under a microscope in order to distinguish gram-positive bacteria from gram-negative bacteria. The cell wall of gram-negative bacteria will not retain the primary dye and be washed away with the decolorizer. Gram-neg. bacteria will then take on the counterstain providing contrast between the two types of bacteria when viewed under a microscope.
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The result is the initial green color of the Simmons Citrate Agar turning blue; generating a positive indication that the organism does indeed utilize citrate as the sole source of carbon and energy.
They are Gram positive:dark blue or violet.
Black is added to a color to tint it which means to darken the color.
Methylene blue stains everything blue.
Gram negative, is motile, red pigment and is a bacillus shape
No, it is negative.B. subtilis on EMB agar:http://www.microbelibrary.org/microbelibrary/files/ccImages/Articleimages/Atlas_EMB/Bacillus-subtilis_EMB_fig11.jpg
What color change do you see when you added ammonia to mustard?
The function of a counterstain in acid-fast stains is to dye the non acid-fast bacteria cells a different color than the acid-fast cells. With two different colors present on a slide, the contrast between the two types (acid-fast and non acid-fast) is more distinct. The more distinct view of cells will assist in observations of a slide.
what year was blue added to the color mix of m&ms
In a gram stain the primary stain is crystal violet. Iodine then sets that dye into the gram positive cells while alcohol washes out the crystal violet from the gram negative cells. Then safranin, which is the counterstain in a gram stain, is used to dye the rest of the bacteria. This is the example I can give you of why a counterstain does not change the look in all the cells. Though safranin stains all the cells, the gram positive cells that were dyed purple from crystal violet don't look pink - only the gram negative do.
Pigments are added to the paint. Pigments are added to the paint. Pigments are added to the paint.
The color is orange to red.
because it is.