PRACTICAL ON FOOD TEST

BIOLOGY SSS 3 FIRST TERM

WEEK TEN

PRACTICAL ON FOOD TEST

PERFORMANCE OBJECTIVE

Students should be able to;

1. Explain the tests of starch and protein
2. Jot down inference

CONTENT

Test for Starch

There are many types of carbohydrates. The main carbohydrates found in our food are in the form of starch and sugars. We can easily test if a food item contains starch. 

1. Take small quantity of the food items to be tested.
2. Put 2-3 drops of iodine solution on it.
3. Observe the colour of the food item.
4. Blue-black colour indicates the presence of starch in the tested food item.

Test for Protein

Proteins are needed for the growth and repair of our body. Foods containing proteins are often called…