4. How to determine fats and oils in simple method? 5. Briefly describe the properties of triglycerides. (4 points)
6. What is the effect if eats food rich with saturated fats and
cholesterol? (3 points)
7. List 3 roles of triglycerides.

Explanation:

The ans for the fourth question-

To a  food sample (solution), add 2cm^3 of ethanol, then add 2cm^3 of distilled water.The test tube should then be lightly shaken

If the result is positive (If a lipid is present), a cloudy emulsion will form in the test tube.

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.