Tuesday, 2 September 2008

5.3

steroid molecule



Lipids include fats and steroids, lipids are water-avoiding compounds. And fat consists of a three-carbon backbone called glycerol attached to three fatty acids. Lipid molecule in which the carbon skeleton forms four fused rings called steroids. Cholesterol is the best-known steroid. It is found in the membranes that surround your cells. it might block your blood vessels.


Structure of fat molecule
1. What property do lipids share?
They are all water avoiding compounds.
2. What are the parts of a fat molecule?
Basically, two parts. 1. Glycerol. 2. Three fatty acids.
3. Describe two ways that steroids differ from fats.
a. For steroids, the carbons form 4 rings but for a fat, instead of 4 rings, it forms glycerols attached to three fatty acids.
b. For fats, there are saturated fats and unsatuated fats. But for steroids, there are no saturated steroids and unsaturated steroids.
4. What does the term unsaturated fat on a food label mean?
It means the fat that contains less than the maximum number of hydrogen atoms in one or more of its fatty acid chain.

1 comment:

Unknown said...

I have read your chapter 5 review (the same I have for my class)hoping to help me study, but by first glance at your work I could immediately tell that your answers were wrong at that you would be no help to anyone at all. you say that there is more to chemistry, but you do not even understand the basic facts of the subject.