Question

Outline the steps involved in the test for protein

Answer 1

Answer:

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Explanation:

Grind/mash the food item. Put the food item into a test tube. Add 10 drops of water and shake the test tube. Add two drops of copper sulphate solution to the test tube, using a dropper.

Answer 2

Protein - Biuret solution

Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple.

What to do.

1. To a test tube, add 40 drops of liquid to be tested.

2. If testing more than one liquid, label each test tube

with a marker.

3. Add 3 drops of Biuret reagent solution to each test

tube. Shake gently to mix.

4. Note any color change. Proteins will turn solution

pink or purple.