The three tenets to the cell theory are as described below: All living organisms are composed of one or more cells. (However, this is considered a controversy because non-cellular life such as viruses are disputed as a life form. See Non-cellular life.)
Hydrochloric acid is the primary digestive acid and has several roles in digestion. The acid prevents harmful bacteria from entering your system by sterilizing it. Another function of hydrochloric acid is to trigger the release of pepsin. You need hydrochloric acid to absorb minerals like magnesium, sodium and iron. Gastric acid is so strong that it could digest the stomach if not for a mucus lining protecting the organ.
The idea here is that it is very difficult for the stomach to produce stomach acid. The normal acidity of blood is about pH7, but the acidity of stomach acid can be as low as pH1 - that means that hydrogen ions (which create acidity) are a million times more concentrated in the stomach than in the bloodstream. acid is required to sterilise the stomach and kill bacteria and yeast that may be ingested and. 2  an acid environment is required for the absorption of certain micronutrients, in particular divalent and trivalent cat-ions such as calcium, magnesium, zinc, copper, iron, selenium, boron and so on.