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.
Answer   Pasta is a source of carbohydrates, so to the extent that the body needs carbohydrates, absolutely! And most pasta is pretty much low or no fat. The sauce eaten â¦ with the pasta is often very calorie and fat rich with meats, oils, cheeses and butter.
Starch-enriched cooking water thickens the sauce. Rinsing the pasta after cooking is a bad idea for a couple of reasons. It can cool the pasta and prevent absorption of a sauce, and it can wash away any remaining surface starch, which at this point in the cooking can work to your advantage.