Summary 5.3

-lipid molecules circulate in your body as chemical signals to cells


-lipids are fats stored in body


-some fats are solid in room temperature.


-carbon atoms in the fatty acid chains form single bonds with each other and rest bond with hydrogen atoms


-the fats in fruits, vegetables, and fish are unsaturated fat.


-saturated fats are unhealthy so it can cause heart disease.


-four focused rings in which the carbon skeletons forms is steroid.


-steroids are lipids because they are hydrophobic but different from fats structure and fuction.


-cholesterol is the best known steroid in.


-high cholesterol increases risk for cardiovascular disease.

Concept Check 5.3

1.What property do lipids share?

Water avoiding property like oil's.

2.What are the parts of a fat molecule?

The parts of a fat molecule are saturated fat and unsaturated fat.

3.Describe two ways that steroids dffer from fats.

Fats consist of a three-carbon backbone attached to three fatty acids. The carbon skeleton which forms four focused rings is steroids.

4.What does the term unstaturated fat on a food label mean?

Having less than the maximum number of hydrogen atoms.