"Food and Nutrition" PPT (second lesson)

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"Food and Nutrition" PPT (second lesson)

Part One: Review the past and learn the new

energy supply substance

Can be absorbed only after digestion

Sugar

Provides the main source of energy needed by the human body

protein

Main raw material for cell growth and tissue repair

Fat

The main substance that stores energy in organisms

non-energy-providing substances

direct absorption

water

The main component of cells and the basis of physiological activities

Inorganic salt

Nutrients necessary to maintain normal physiological activities

vitamins

Trace organic matter that is indispensable for normal physiological activities of the human body

not absorbed

cellulose

Assists in the digestion and absorption of food, facilitates defecation, etc.

Food and Nutrition PPT, Part 2: Learning Objectives

1. State the reasonable dietary structure;

2. Tell the causes and harms of obesity.

Food and Nutrition PPT, Part 3: Balanced Diet

The types and amounts of nutrients contained in various foods are ________, and almost no food contains all 7 types of nutrients at the same time.

In order to meet the needs of the human body, we should eat all kinds of food and _________ to achieve _________.

No partial eclipse. No picky eaters. No overeating. Be sure to eat breakfast.

Dietary Guidelines for Teenagers:

1. Eat more cereals to provide sufficient energy

2. Ensure the intake of fish, meat, eggs, milk, beans and vegetables

3. Participate in physical activities and avoid blind dieting

4. Breakfast and dinner account for 30%, lunch accounts for 40%

Food and Nutrition PPT, Part 4: Obesity

According to data from the National Bureau of Statistics and the National Health and Family Planning Commission, the overweight and obesity rates among Chinese people continue to rise. From 1992 to 2015, the overweight rate increased from 13% to 30%, and the obesity rate increased from 3% to 12%.

At the same time, the obesity rate among children and adolescents in China is also increasing rapidly. From 2002 to 2015, the overweight rate among children and adolescents increased from 4.5% to 9.6%, and the obesity rate increased from 2.1% to 6.4%.

causes of obesity

A.Heredity

B. Lack of exercise

C. Harmful eating habits

D. Psychological factors

Dangers of Obesity

A. Susceptible to diabetes

B. Susceptible to cardiovascular and cerebrovascular diseases

C. Susceptible to certain cancers

D. Life is inconvenient...

Food and Nutrition PPT, Part 5: Summary of this Lesson

1. Balanced diet

There should be as many types of food as possible; the quantity should be appropriate and the proportions reasonable; the income and expenditure should be relatively balanced, etc.

2. Obesity

Current situation: Obesity rates are increasing

Reasons: genetics, lack of exercise, harmful eating habits, psychological factors, etc.

Harm: prone to diabetes, cardiovascular and cerebrovascular diseases, certain cancers, inconvenience in life, etc.

Food and Nutrition PPT, Part 6: Class Practice

1. my country has officially launched the national "Student Milk Plan" since November 15, 2000, becoming one of the countries in the world that implements the student milk plan. Teenage students drink a certain amount of milk every day to promote body growth and enhance physical fitness. This is because milk contains more ( )

A. Vitamin A, calcium B. protein, sugar

C. Protein, calcium D. Vitamin A, sugar

Comprehensive application one:

The following table lists the main ingredients other than water and inorganic salts in five foods A, B, C, D, and E (100 grams each):

(1) Food ( ) helps prevent night blindness; ( ) can provide more energy; ( ) is suitable for patients with scurvy.

(2) What are the disadvantages of taking food D as the main food for a long time?

Food D has been used as the main food for a long time. The disadvantage is that in addition to sugar, the content of fat, protein and VC is too low, and it lacks VA, so it is not good for health.

Keywords: Zhejiang Education Edition ninth grade science PPT courseware free download, food and nutrition PPT download, .PPT format;

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"Food and Nutrition" PPT (first lesson):

"Food and Nutrition" PPT Part One Content: Scenario Introduction Why do people grow up? Where does the energy for various life activities come from? Energy for various activities performed by humans and animals comes from food. Learning Objectives 1. State the measurement of energy contained in food..

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Update Time: 2024-11-20

This template belongs to science courseware Zhejiang Education Edition Ninth Grade Science Volume 1 industry PPT template

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