1. concept
It is a very important concept in nutrition, which refers to the nutritional components contained in food.
classify
Seven categories: protein, carbohydrates, lipids, minerals, vitamins, water and dietary fiber.
Focus 2: The function and classification of carbohydrates.
1. function
① provide energy
② Substances that constitute organizational structure and physiological activities.
③ blood sugar regulation
④ Participate in the metabolism of other nutrients.
classify
According to the degree of molecular polymerization, it is divided into sugar, oligosaccharide and polysaccharide.
Focus 3: Classification of protein.
Complete protein, semi-complete protein, incomplete protein.
Focus 4: Classification of amino acids
1. Essential amino acids
Refers to amino acids that cannot be synthesized or synthesized quickly enough in the body and must be supplied by food.
2. Non-essential amino acids
Non-essential amino acids are not unnecessary in the body, but can be synthesized in the body, and it is no harm to lack them in food.
3. conditionally essential amino acid
Cysteine and tyrosine can be transformed from methionine and phenylalanine respectively in the body, which are called conditionally essential amino acid or semi-essential amino acids.
Focus 5: Classification of vitamins
1. Fat solubility
It mainly includes vitamin A (retinol), vitamin D (calciferol), vitamin E (tocopherol) and vitamin K (clotting vitamin).
2. Water solubility
Mainly: B vitamins and vitamin C.
Group B mainly includes vitamin B 1, vitamin B2, vitamin PP, vitamin B6, pantothenic acid, biotin, folic acid and vitamin B 12.
The above is about the sharing of basic nutrition related test sites. In short, paying more attention to these when studying, strengthening unfamiliar places, and then memorizing the contents in a targeted way can effectively help improve the scores and master the professional skills of health management!