Gram positive bacterias have a cell wall which will stain in violet color. Gram negative bacterias, howâ¦ever, have an extra layer of cell wall around them which prevents the cell wall from being dyed. These gram negative bacterias will need an additional stain called safranin to make the bacterias redish color.
Grain products like bread, cereal, rice, and pasta are good for you. They are important sources of vitamins and minerals. Breads, cereals, rice, and pasta are also good sources of carbohydrates like starch and fiber. Many people think that starchy foods like breads, rice and pasta are fattening.
Use lots of waterâat least 2 quarts for each Â½ pound of pasta. Season pasta's cooking water generously with salt. (Don't worry, it won't all soak into the pasta. A generous amount of salt will simply yield more savory, flavorful results when the pasta is cooked.)