Question

1.What are the two types of energy giving foods?Give three examples of each type.
2. Name two minerals minerals required by our body. What are their sources ?
3. where are the salivary glands located and what is their function?
4. mention two enzymes secreted by the stomach .
5. name two important enzymes that act on food in ileum.​

Answer 1

Answer:

Ans.1 Energy giving food gives us energy to work and play. Some of the energy giving foods are grains like wheat and rice and foods like sugar and chocolate. Carbohydrates and fats are energy giving foods.

Ans.2 Minerals are those elements on the earth and in foods that our bodies need to develop and function normally. Those essential for health include calcium, phosphorus, potassium, sodium, chloride, magnesium, iron, zinc, iodine, chromium, copper, fluoride, molybdenum, manganese, and selenium.

Ans.3 The salivary glands are exocrine glands that are positioned in the head, in and around the oral cavity and secrete their salivary contents into the mouth. Their function is to help keep the oral mucosa protected and lubricated.

Ans.4 Chief cells, also found within the gastric pits of the stomach, produce two digestive enzymes: pepsinogen and gastric lipase. Pepsinogen is the precursor molecule of the very potentprotein-digesting enzyme pepsin.

Ans.5 Cells in the lining of the ileum secrete the protease and carbohydrase enzymes responsible for the final stages of protein and carbohydrate digestion into the lumen of the intestine. These enzymes are present in the cytoplasm of the epithelial cells.

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Answer 2

Two energy giving food : wheat, rice

Two minerals required by our body : Calcium : eggs and milk

iron : apple and vegetables

Ans 3: The salivary glands are located in our mouth . Salivary glands moisten food so we can swallow it more easily.

Ans 4: Pepsinogen and gastric lipase

Ans 5: protease and carbohydrades