Question

ANSWER THE FOLLOWING QUESTIONS:
1. Define the term nutrients.
2. Name the various nutrients needed by human body.
3. Why do we need carbohydrate in our diet.
4. Children need more proteins in diet. Why?
5. Write the test to show the presence of carbohydrate,
protein and fat in food items.
6. We advised to eat variety of food. Why?​

Answer 1

Answer:

1.a substance that provides nourishment essential for the maintenance of life and for growth.

Fish is a source of many important nutrients, including protein, vitamins, and minerals.

2.Nutrients are compounds in foods essential to life and health, providing us with energy, the building blocks for repair and growth and substances necessary to regulate chemical processes. There are six major nutrients: Carbohydrates (CHO), Lipids (fats), Proteins, Vitamins, Minerals, Water.

3.Carbohydrates are your body's main source of energy: They help fuel your brain kidneys heart muscles and central nervous system. For instance fiber is a carbohydrate that aids in digestion helps you feel full and keeps blood cholesterol levels in check.

4.Protein is a macronutrient that is vital for child growth and development, yet research shows that one in seven school-aged children do not meet their daily protein intake goals. If a child is growing slowly or is small for their age they may not be getting all the protein and nutrients needed for healthy growth.

5.Aim:to see if a given item contains fat.

Materials required : a ten inch long strip of brown paper and ten different samples of food.

Procedure:

1. Mark ten divisions, each of 1 inch, on the strip of brown paper. Write the makes of each food sample you have chosen to test for fats.

2. Crush each item, pressing it on the paper in the marked section. Look for oily spots, which indicate the presence of fat, in each section.

Record your observation.

Aim: to test if a food sample contains proteins.

Materials required : a dilute solution of egg white, copper sulphate solution, and dilute sodium hydroxide.

Procedure :

1. Take 2 ml of egg white solution and mix it with an equal volume of dilute sodium hydroxide.

2. Add a few drops of copper sulphate solution to the mixture. A purple color indicates the presence of protein.

6.Eating a varied, well-balanced diet means eating a variety of foods from each of the five food groups daily, in the recommended amounts. Because different foods provide different types and amounts of key nutrients, it is important to choose a variety of foods from within each food group.

Explanation: