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.
Whole wheat pasta provides nearly 40 grams of energy-rich carbohydrates per one cup (cooked) serving. In addition, whole wheat pasta provides five grams of dietary fiber, most of it insoluble fiber, shown to reduce risk for breast cancer. To ensure you are buying the healthiest whole wheat pasta, look for at least four grams of dietary fiber and five grams of protein per two ounces dry (or one cup cooked) serving.