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.
View Larger Image. Whole-Wheat Pasta. Pasta is one of the most carbohydrate-dense foods, making it a great food to eat before big workouts and races, when you want to maximize muscle glycogen stores, and after big workouts, when you want to replenish those stores. But whole-wheat pasta is a better choice than pasta made with refined wheat flour.