"Nutrition Substances in Food" Human Nutrition PPT Courseware 3

Description

"Nutrition Substances in Food" Human Nutrition PPT Courseware 3

learning target

1. Understand the main nutrients contained in food;

2. Recognize vitamin deficiencies;

3. Understand the sources of various nutrients and their effects on the human body.

Focus: The role of proteins, carbohydrates and fats.

Difficulty: The role of vitamins

self-study method

Read textbook P40-P42, time 5 minutes, complete:

1. Understand the functions of proteins, carbohydrates, and fats, and understand their sources in conjunction with Figures 31, 32, and 33;

2. Use the following table to learn vitamins:

The role of inorganic salts

It accounts for about _______ of body weight and plays a great role: _______ is a component of hemoglobin, and _______ is an important component of teeth and bones.

What vitamins are found in these foods?

Main function: Maintain normal _______ and _______ normal physiological functions of the human body.

Deficiency disorders: _______, loss of appetite, indigestion, _______.

Fat

Its function is to provide important substances of _______, but it is often stored in the body as _______ substances.

What should we do after reading this?

Don’t be picky about food, don’t overeat, and must eat breakfast.

Some suggestions:

1. The best drink is boiled water, because many drinks contain preservatives, flavors or artificial colors, and contain a lot of sugar. Regular drinking is not good for your health;

2. Wash fruits and vegetables eaten raw to avoid pesticide poisoning.

3. Try to eat less leftovers and leftovers that have been left over for a long time. If eaten, be sure to heat it thoroughly to prevent bacterial food poisoning;

4. Do not eat food sold on the street without a health permit;

5. Try to eat less fried, smoked and barbecued foods.

6. Develop good hygiene habits. Cut your nails frequently and wash your hands before meals and after using the toilet to prevent the spread of infectious diseases.

What nutrients are in food?

Protein, fat, sugar, vitamins, inorganic salts, water

1. The basic raw material necessary for cell composition and tissue renewal is ( )

2. As a reserve substance in the body, the substance with the highest energy supply during oxidation is ( )

3. The most abundant substance in the human body is ( )

4. The substance that accounts for about 4% of the human body is ( )

5. It is neither a component of cells nor an energy substance of the body, but it is a substance that regulates life activities and growth and development ( )

6. The energy substance for human life activities and maintaining a constant body temperature is ( )

A. Protein B. Carbohydrate C. Fat D. Vitamin

7. When the human body lacks ∨C, it is easy to suffer from ( )

A. Night blindness B. Beriberi C. Rickets D. Scurvy

8. The necessary elements to make up hemoglobin are ( )

A.Calcium B.Phosphorus C.Iodine D.Iron

9. What can promote the normal development of the human body, enhance resistance, and maintain normal vision of the human body ( )

A.∨C B.∨D C.∨A D.∨B1

Homework (choose one)

1. Search for information: What is green food? Is there a sign? Are there levels?

2. According to the appendix on P128 of the textbook: "General Nutritional Facts of Some Foods", make yourself a recipe for three meals a day.

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Update Time: 2024-09-07

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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