What is food?
Food is any material that, when consumed by a living creature, is capable of sustaining growth and development. It controls hazardous or toxic chemicals that may enter the body and regulates bodily activities.
What are the functions of classes of food?
Food is important for a variety of reasons, including:

Food satisfies hunger.
It gives you energy for a variety of physical tasks.
It promotes growth.
It is illness-resistant.
Food helps people recover from sickness.
It is a source of revenue.
It is eaten in order to get enough nutrients.
Food contributes to a healthy lifestyle.
Food Group Fundamentals
Classes of food
Food varieties must be classified into categories. There are five distinct groupings.

– Milk and milk producer organizations

– Meat class

– Fruits and vegetables

– group of breads and cereals.

– Tuber class

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Classes of Food |How many classes of food do we have?
Food is classified into seven primary classes:

Carbohydrates,
Fats
Fiber
Proteins
Minerals
Vitamins
Water.
What we eat makes us who we are. That is why it is important to eat properly, and fortunately for us, science can assist us in this. Did you know that the food we eat is divided into classes depending on the nutritional benefits it provides? Food may be defined succinctly as a material consumed by a living form and providing nourishment to such an entity.

Food may have many structures; it can be plant-based or animal-based.

These food classes are classified as either macronutrients (required in relatively high amounts) or micronutrients (needed in smaller quantities).

Carbohydrates, fats, fiber, proteins, and water are the macronutrients. Water, vitamins, and minerals are examples of micronutrients.

The 7 classes of food and their functions
Carbohydrates
Carbohydrate molecules are made of hydrogen atoms, oxygen atoms, and carbon atoms. They are categorized based on the quantity of monomer units they contain. As a result, they are divided into polysaccharides, monosaccharides, and disaccharides. Carbohydrates may be found in rice, noodles, bread, pasta, and other grain-based goods.

Ordinary polysaccharides are more complicated than ordinary saccharides and require much longer time to digest. Only the simplest sugar units of food classes can be absorbed by the blood. Simple carbohydrates are easily absorbed by the blood. Nonetheless, it may cause an unusually high blood sugar level, which may lead to vascular and heart problems.

Fats
A fat molecule is often made up of multiple fatty acids. These fatty acids are made of lengthy chains of carbon and hydrogen atoms. All fats may be divided into unsaturated and saturated types. Saturated fats have all of their carbon atoms linked to hydrogen atoms. Unsaturated fats are those in which carbon is generally linked with a few molecules of hydrogen through double bonds. Fats are utilized to regulate energy, as a source of energy, to regulate temperature, and to aid in vitamin absorption. Fats may be found in a variety of foods, including dairy products, meat, fish, whole eggs, vegetables, nuts, and so on.
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