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شرح ساينس الصف الثاني الاعدادي لغات - الفصل الدراسي الاول
شرح ساينس تانية اعدادي - ترم اول

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in this lesson:
Nutritional chemistry
A branch of chemistry that studies the types of nutrients in food.

First: Carbohydrates
Classification of carbohydrates
The following diagram shows the classification of carbohydrates according to their chemical compositions:

Disaccharides
They are oligosaccharides, each molecule of which consists of two units of monosaccharides with one water molecule removed.

Glucose detection
Integration with chemistry and biology

Second: Fats
Cholesterol
A fatty substance whose deposition on the inside walls of arteries leads to their blockage.

Risks of the elevation of cholesterol levels :
The deposition of cholesterol on the inside walls of the arteries leads to their blockage, and increases the risk of heart diseases.

Third: Proteins
Proteins are organic chemical compounds consisting of basic units soluble in water called amino acids.

Proteins detection

The importance of proteins

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