2nd ESO. Theory part. IES Aravalle.

2nd ESO. 2^nd Evaluation. Theory part.

1-Diet: A diet is all the different types of food and drink that a person consumes.

2-Food: Food is any substance containing nutrients that can be taken into our body system.

3-Nutrients: A nutrient is the material needed by the cells of an organism to produce the energy used in the functions of growth, repair and reproduction, metabolism, among others. Nutrients are chemical substances in our food. The main nutrients are: carbohydrates, fats, proteins, minerals, vitamins.
3.1 Functions: Nutrients have a role in:
- providing energy
- repair and ensures normal body functions
- supports growth.

4-Carbohydrates: Carbohydrates supply the body with the energy it needs to function.
Chemical compound formed by carbon, hydrogen and oxygen. They are present in foods in different forms and percentages: complex carbohydrates (cereals, pulses, potato, etc.) and simple carbohydrates or sugars (honey, fruit, milk, etc.). They provide energy to the body.

5-Fats:

                    Fat is a lipid material of various types and characteristics, present almost exclusively in animal organisms. Fat is characterized by being composed of fatty acids and glycerin. Fats are composed of building blocks called fatty acids. There are three major categories of fatty acids-saturated, polyunsaturated, and monounsaturated. These classifications are based on the number of hydrogen atoms in the chemical structure of a given molecule of fatty acid.

6-Protein:

                Protein is important for the growth and repair of the body’s cells and for building muscle.  It can also be used to provide energy. Animal-based foods are excellent sources of protein.