Lipids

 

Lipids

Fatty acids and Glycerol are the monomers for lipids 

Lipids are composed of carbon, hydrogen, and oxygen atoms, and in some cases contain phosphorus, nitrogen sulfur, and other elements.

Types of lipids:

• Triglycerides

They are the main form of lipids in plants and animals

Example: Avocado, oil, meat, nuts, butter, and etc..

• Phospholipids

Example: Cell membrane is a phospholipid bilayer

• Waxes

Example: Beeswax, earwax, and cuticle of leaf

• Steroids

 Example: Cholesterol, Hormones, And Vitamins

    Lipids are important in the diet because they are energy sources and as sources of fatty acids. They also serve as structural components of cell membranes.

20-35% of our food intake should be from lipids

Lab Report test station 4:

 For this experiment we wanted to see which food has the most amount of lipids, so we had 4 test tubes and in test tube 1 we put 10 drops of water, in test tube 2 we put 10 drops of milk, in test tube 3 we put 10 drops of soda, and in test tube 4 we put 10 drops of oil. After that we added 2 ml of ethanol to each test tube and we made sure to shake it well, then we added 2 ml of water to each test tube. We observed the test tubes carefully and the test tube with water stayed the same, nothing changed. The one with milk turned white and it looked kind of clumpy. The soda also turned into a white solution but somewhat yellow, and the oil didnt mix and the liquid below the oil is opaque. 

The conclusion is that oil had the most amount of lipids.