5.3 Lipids incluede fats and steroids

Charateristics of Lipids

1.oil's inability to mix with water is a type of water-avoiding compounds called lipids
2.hydrophobic is molecules that are water-avoiding

3.lipids known as fats store energy in our body

Fats

1.fat contains glycerol attached to three fatty acids, which contain long hydrocarbon chains

2.oils are liquids at room temperature

3.saturated fat is a fat in which all three fatty acid chains contain the maximum possible of hydorgen atoms

4.most animal fats are saturated

5.unsaturated fat contains less than the maximum number of hydrogen atoms in one or more of its fatty acid chains

6.fats in fruits,vegetables,and fish are generally unsaturated

Steroids

1.steroid is a lipid molecule in which the carbon skeleton forms four fused rings

2.steroids are hydrophobic

3.cholesterol is the best-known steroid

4.cholesterol is an essential molecule found in the membranes that surround your cells

Concept Check

1. What property do lipds share?

Lipids are all hydrophobic

2. What are the parts of a fat molecule?

Glycerol and three fatty acids

3. Describe two ways that steroids differ from fats.

Steroids are hydrophobic, and some steroids circulate in your body as chemical signals.

4. What does the term unsaturated fat on a food label mean?
The fats in fruits, vegetables,fish are unsaturated fat. Unsaturated fat is more healthier to our body.