... into the body without chemical change. Before the organic foods can be absorbed, they have to undergo digestion. This is the process by which organic compounds, capable of acting as foods, are so altered that they may be absorbed ...

... or in combination with organic foodstuffs. 134 FOODS Organic foods are divided into two main groups: Nitro- genous ... may gain access later. The resulting decomposition and organic changes are ... it unfit for food unless bacterial action is inhibited, that is, unless ...

... and require complicated organic compounds as foods. These organic foods may be ingested as solid particles either through ... protoplasm from other organisms and utilize it as food. Organic matter may be absorbed through the body surface ...

... build up organic matter without either sunlight or organic food. These autotrophic bacteria (as they are called) can ... Bacteria on Plant Nutrients BACTERIA IN RELATION TO ORGANIC MATTER Plant food. In studying bacteria and their activities in soil ...

... water and salts, which need no digestion. The organic foods are: carbohydrates ’ Xsugars and starches), fats, and proteins. In addition there are accessory foods (also organic) which are known as vitamins. Digestion begins in ...

... metallic 75 in milk 504 of molds 508 organic 75 in plant foods 508 from putrefaction 544 excreted by stomach 547 ...

... and re- quiring for its existence oxygen and organic food. 2. Pertaining to such an organism, normal a., ... Gr. pera. beyond 4- rpo^pri nutrition]. Utilizing organic matter for food. metatypic (met-ah-tip'ik). Composed of the ...

... bacteria, unlike the higher species of plants, require organic food, either vegetable or animal, for their sustenance. One ... inorganic, such as is used in medicine, and organic, obtained from food—see Chapter XXVI,—is a very essential part ...

... Carbonate of calcium dissolves in weak acids. 27 Organic food remaining on teeth develops organic acids. I8 Why remove food ? 37 A decayed tooth can not be replaced. ...

... are inorganic. In view of their chemical composition, organic foods are generally classified as nitrogenous and non-nitro- ... introduced into the system in combination with other organic elements. Among nitrogenous foods, the flesh or muscular tissue of animals contains ...