Oil would be a good substitute in recipes requiring melted butter, just remember that butter is 10-20% water. In pie crusts, pastries, and biscuits, you build up layers of dough and butter when you roll and knead them, and this is what creates a flaky dough.
Confidence votes 48. The primary buffer in the human body is bicarbonate (HCO3-), and it works so well to maintain our pH's at 7.4 because of its unique relationship to respiration.uffers are chemicals that reduce major pH changes in your body fluids (blood, intracellular fluid, interstitial â¦ fluid). An example of pH change is during strenuous exercise when your skeletal cells produce lots of carbon dioxide which enters the blood and forms carbonic acid.
NOTE: This is the Consumer Version. Physical barriers and the immune system defend the body against organisms that can cause infection. Physical barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid. Also, the normal flow of urine washes out microorganisms that enter the urinary tract. The immune system uses white blood cells and antibodies to identify and eliminate organisms that get through the bodyâs physical barriers (see Biology of the Immune System).