Chemistry and Life : Balanced Diet, Nutritious Diet, Healthy and Civilized Life

1. Coarse grains and fine grains should be matched: a reasonable mix of coarse and fine grains can improve the flavor of food, help the complementarity of various nutrients, and improve the nutritional value and utilization of food.

2. The types of non-staple foods should be diverse, with meat and vegetables: meat, fish, milk, eggs and other foods are rich in high-quality protein, and various fresh vegetables and fruits are rich in vitamins and inorganic salts. The combination of the two can be cooked into a wide variety of delicious and fragrant dishes, which are not only nutritious, but also can enhance appetite and are conducive to digestion and absorption.

3 Staple and non-staple food combinations: Staple foods refer to food crops containing carbohydrates. Staple foods can provide the main calories and protein, and non-staple foods can be supplemented with high-quality protein, inorganic salts and vitamins.

4. Dry and thin diet: The staple food should be mixed with dry and thin according to the specific situation, so that one can increase satiety, and the other can help digestion and absorption.

5. Adapt to seasonal changes: summer food should be light and refreshing, and salt and sour foods should be appropriately increased to increase appetite and replenish salt loss caused by sweating. Winter meals can appropriately increase the fat content to increase calorie energy Ways to prepare a reasonable diet:

Based on specific conditions (e.g., gender, age, labor intensity), the total daily caloric and nutrient requirements are determined.

According to the proportion of carbohydrates (60 70), fat (20 25) and protein (10 15) to the total daily caloric energy, the requirements are calculated separately.

Once you have determined your daily nutrient needs, plan your daily diet based on the nutrients contained in the food.

Determine the amount of staple food and non-staple food per day according to the economic and ** situation.

Finally, the nutrient content of the whole food is calculated and compared with the supply standard. If the difference is within 10 amplitudes, it is compliant.

Diet should be a reasonable combination.

Thick and thin with meat and vegetables.

red lacks copper; Green iron deficiency. Lack of human results.

Go to the library and look for it.,**That's a lot.。

To be healthy, first of all, it is necessary to establish a balanced relationship between the physiological needs of the human body and the nutritional supply of the diet, that is, a balanced diet.

A balanced diet requires several aspects to establish a balance between dietary nutrient supply and the physiological needs of the body: the balance of caloric nutrient composition, the balance of amino acids, the balance between the intake of various nutrients and the acid-base balance, and the balance between animal foods and plant foods. Otherwise, it will affect the health of the body and even lead to the occurrence of certain diseases.

Carbohydrates, fats, and proteins all provide calories to the body, called caloric nutrients. When the total calories provided by caloric nutrients are balanced with the energy consumed by the body; When the intake ratio of the three caloric nutrients is, respectively, the calories provided to the body are: carbohydrates account for about 60%-70%, fat accounts for about 20%-25%, and protein accounts for about 10%-15%, their special roles play and play a role in promoting and protecting each other, this total caloric balance, the caloric ratio (or the proportion of caloric nutrient intake) is also balanced The situation is called caloric nutrient composition balance.

Too much caloric nutrient supply will cause obesity, hyperlipidemia and heart disease, too little, resulting in malnutrition, and can also induce a variety of diseases such as anemia, tuberculosis, cancer, etc.

The three caloric nutrients affect each other, and when the total calorie is balanced, the proportion is not balanced, which also affects health. When you consume too much carbohydrates, it increases the burden on your digestive system and kidneys, reducing your chances of consuming other nutrients. When too much protein calorie is provided, it will affect the normal function of protein, resulting in protein consumption and affecting the ammonia balance in the body.

When the caloric supply of carbohydrates and fats is insufficient, the protective effect on proteins is weakened.

In order to meet the caloric needs of life and work at all times, usually, the calorie distribution of three meals a day should be: breakfast accounts for 30%, lunch accounts for 40%, and dinner accounts for 30%, so as to ensure the heat balance of the day. Normally, human blood is alkaline and the pH value is kept in between.

Acidic foods and alkaline foods should be consumed in moderation to maintain the acid-base balance of body fluids, and when the food is not properly matched, it will cause physiological acid-base imbalance.

Excessive intake of acidic food, blood acidity, darkening of color, and increase viscosity will cause acidosis in severe cases, and at the same time increase the consumption of calcium, magnesium, potassium and other ions in the body, resulting in calcium deficiency. This acidic constitution will affect the health of the body.

Acidic balance foods include: egg yolk, rice, chicken, eel, flour, carp, pork, beef, dried squid, beer, peanuts, etc.

Alkaline foods include: kelp, vegetables, watermelon, radish, tea, banana, strawberry, pumpkin, green bean, cucumber, lotus root, etc.

(1) The nutrients rich in vegetables are vitamins, the nutrients rich in rice are sugars, and only olive oil is rich in oil, so C and A are selected

2) The concept of low-carbon life refers to the energy consumed in life and rest should be reduced as much as possible, so as to reduce low-carbon emissions, especially carbon dioxide emissions, so as to reduce air pollution and slow down ecological deterioration

All four of the options in this question are in line with the concept of "low-carbon living", so ABCD is chosen

3) LEDs and the like require electrical energy, and the electrical energy provided by the power supply device is generated by sunlight, so the device can convert solar energy into electricity

4) Because coal contains a small amount of sulfur, so coal combustion will produce sulfur dioxide, sulfur dioxide is one of the main pollutants in the atmosphere, through the information provided by the stem, it can be known: the reaction can convert sulfur dioxide into carbon dioxide, sulfur dioxide and carbon dioxide are oxides, so the oxides involved in the reaction are sulfur dioxide and carbon dioxide

So the answer is: 1) c; a；

2）abcd；

3) solar energy;

4) Sulfur dioxide and carbon dioxide.

(1) Rice contains a lot of sugars, olive oil belongs to oil, and vegetables contain a lot of vitamins;

So the answer is: a b c;

2) Many LED lamps used in the Shanghai World Expo can convert solar energy into electricity after receiving sunlight; So the answer is: solar energy;

(1) Rice is rich in sugar, and olive oil is rich in oil

2) Measures such as saving the use of paper, sorting and disposing of garbage, reducing the use of plastic bags, and reducing the use of disposable paper cups are in line with the concept of low-carbon life

3) Many LED lamps used in the Shanghai World Expo can convert light energy into electrical energy after receiving sunlight