II. Materials;

Dishwashing liquid

Ziplock bag

Filtering material (gauze, cloth)

Banana fruit (ripe)

salt

Refrigerated 70% alcohol

2 beakers

Spoon

Procedure:

1. Dissolve 1 tbsp salt in 120 ml warm water.

2. Add 1 tbsp of dishwashing liquid and mix slowly.

3. Peel fruit and put into ziplock bag.

4. Mash the banana into a pulp.

. Filter the banana using any filtering material to get the extract.

5

6. Add 20 ml of refrigerated 70% alcohol to the extract.

7. Let the mixture stand for 5-10 minutes undisturbed.

IV. Results:

Observation Table

A. Draw the set-up.


Draw the Undisturbed product


B. Answer the following questions.

1. What is the function of cold alcohol? Explain.

2. What is presence in the banana fruit that contributes for testing biomolecule? Discuss.

3. What does the appeared white/dirty white fibrous mass indicate? What does it indicate? Describe.

4. How is the role of precipitating agent in destroying the banana cells?

V. Conclusion​