Summary for Chapter 5.3

Characteristics of Lipids
Lipids are hydrophobic which means water fearing. The reason why oil can't mix with water is because oil is consists of lipids. Those lipids can circulate our body chemical signals to cells. Some other types of lipids are knowsn as fats store energy inb our body.

Fats
Fats consists of a three-carbon backbone glycerol attached to three fatty acids, which contain long hydrocarbon chains. Some of them are solid at room temperature and some of them are liquid at room temperature(oils). They store energy for later use but if you don't use, you might have some problems by having too much of them
Saturated Fats is a fat in which all three fatty acid chains contain the maximum possible number of hydrogen atoms. Most of them are animal fats and they are solid at room temperature.
Unsaturated fats contains less fatty acid chains because some of its carbon atoms are double-bonded each other. Vegetables, fruits and fishes are unsaturated. Too many saturated reduce blood flow and cause it to heart disease.

Steroids
A lipid molecule in which the carbon skeleton forms four fused rings is a Steroids. They are lipids because they are hydrophobic but what they function is different from fats. Fats store energies for your body but steroids send chemical signals to our body.
One type of steroids is called Cholesterol. It's an essential molecule found in the membrances that surround your cells. It also helps to produce other steroids but it has high levels of particular cholestrol-containing substance tht risks hear diseases.

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3. Steroids don't store energies and it sends chemical signals to your body.

4. It shows to buyers that this food is healthy because it has no bad fats.