One of the first things that we learn in the science classrooms is about nutrition. What does it really mean? How do you define nutrition? These are only some of the many questions that children ask their teachers when asked to learn about nutrition. If you want your kids to have a good knowledge about nutrition, here are some tips that you might find useful.
Nutrition is the chemical and biological process through which an organism uses food as a medium to support its normal existence. It consists of absorption, digestion, assimilation, production, utilization, distribution, burial and elimination. Food is classified into four broad groups: animal-origin foods, plant foods, vitamins and minerals, and fats. Animal origin foods include all those foods that animals eat such as meat, milk and eggs; vegetables are those that are rich in vegetable matter such as spinach, carrots and corn; fruits are all those that come from the plants such as apples, oranges, strawberries and bananas; minerals vitamins include those in iron and calcium; and fats are all those that are found in meat, oil and fats. Based on the types of food that an organism requires for a balanced diet, nutritionists determine the amount of each nutrient needed by an individual.
Nutritional classification is based on the three different types of nutrients or substances that organisms require for a healthy living. The nutrients or substances that are needed for good health are carbohydrates, proteins and fats. Carbohydrates provide energy and provide the body with the capacity to digest and absorb food. Proteins are the substances that build and repair the tissues and organs of the body, while fats are the substances that supply the body with the energy that it requires to perform different body functions.
The first thing that you should know is that there are six different categories of foods according to nutrition. These are e.g. Bacteria, e.g. Archaea, prokaryotes, e.g.
The second thing that you should understand is that there are two different types of sources of nutrition. One type of food is called autotrophic sources of nutrition. These are the bacteria, e.g. Methanococcus, which only feed on autotrophs, and the heterotrophs, e.g.
The other type of source of nutrients is proenzyme rich foods. These are the eukaryotic foods, which are symbiotic in nature, wherein the nutrients provided by the bacteria feed the yeast cells instead. The third type of source of nutrients is non-autotrophic foods. These are the foods that do not feed yeast cells, but rather the non-heterotrophic plants (e.g. spinach, broccoli, squash, lettuce, cabbage, kale and carrots).