NCERT 6th Class (CBSE) Science: Components of Food

Question: Why does our body need protein? Name Some.

Answer: Proteins are needed by our body for muscle-building and repairing damaged tissues. Our muscles, Organs and even blood are made up of mostly proteins. If we do not eat proteins, our body will not be able to repair damaged cells. For Eg- Meat, Fish, Egg and Milk.

Question: Differentiate between constipation and dehydration.

Answer: Constipation:

1. Dack of insoluble roughage in the diet. Causes Stool to become hard difficult to pan.
2. If we eat whole grain, carrot, cabbage etc. We can be Saved.

Dehydration:

1. It is caused due to excex loss water from our body.
2. ORS or Water.

Question: Define a balanced diet. What should a balanced diet include?

Answer: A diet that contains adequate ammount of different nutrients required for the healthy functioning of our body is called a balanced diet.

A balanced diet should include:

1. Milk group – milk and milk products
2. Vegetables and Fruits
3. Meat group – Chicken, fih, lamb etc. Meat substitutes like beans, peas, nuts and seeds.
4. Breads and Cereals.

Question: Define deficiency diseases. How are they different from other diseases?

Answer: Lack of Carbohydrates, proteins, vitamins or minerals in the diet can cause diseases. Diseases that are caused due to the lack of nutrients in the diet are called deficiency diseases. Deficiency disease cannot be transmitted from one person to another.

Question: What are the two types of vitamins? Write a short note on each of them with examples.

Answer: Vitamins are of two types: Fat- soluble and water – soluble.

Fat: Soluble vitamins: Vitamins A, D, E and K are fat-soluble vitamins. These are stored in fat tissues of our body and are used only when the body needs them. Our body prepares vitamin D in the presence of sunlight.

Water: Soluble vitamins: Vitamins B1, B2, B3, B6, B12 and folic acid (together known as Vitamin B complex) and vitamins care water soluble vitamins. Since water soluble vitamins are not stored in the body these need to be regularly supplied through food items like citrus  fruits, spinach and other green leafy vegetables etc. Lack of vitamins in the body can cause deficiency.

Question: Discuss the importance of water in body.

Answer: Importance of water body in our:

Almost 70% of our body weight is water. Water is needed by our body for good health.

1. It is helps to transport substances inside our body.
2. It helps our body to absorb nutrients from food.
3. It helps to regulate our body temperatures.
4. It is needed for various chemical reaction that take place inside our body during digestion, excretion etc.
5. We get water not only from the liquids we drink but also from the food we eat. Milk, Fruits, Vegetable, and juices are good example of water.