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.
The usual portions are 4 to 6 quarts of water and 1 to 2 tablespoons of salt for every pound of pasta. There is some debate as to wether you need all that water, and indeed I tend to use a little less â about 4 quarts of water and 1 tablespoon of salt per pound of pasta.