BIOL1001 Lecture Notes - Lecture 16: Monounsaturated Fat, Canola, Unsaturated Fat
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Document Summary
Fats have important functions, and many vitamins are fat soluble. Fats serve as a long-term storage form of fatty acids and act as a source of energy. A fat molecule consists of two main components: glycerol and fatty acids. Glycerol is an alcohol with three carbons, five hydrogens, and three hydroxyl groups. Fatty acids have a long chain of hydrocarbons with a carboxyl group attached and may have 4-36 carbons; however, most of them have 12-18. In a fat molecule, the fatty acids are attached to each of the three carbons of the glycerol molecule with an ester bond through the oxygen atom. During the ester bond formation, three molecules are released. Since fats consist of three fatty acids and a glycerol, they are also called triacylglycerols or triglycerides. Triacylglycerol is formed by the joining of three fatty acids to a glycerol backbone in a dehydration reaction. Three molecules of water are released in the process.
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Related Questions
please i need help with this qustions answer the multiple choice that is all and be clear not writes un clear stuff just asnswer the qustions please
Question 1
Starch is: (select all the correct answers)
an energy storage carbohydrate in plants |
an energy storage carbohydrate in animals |
a structural carbohydrate in plants |
a polymer of glucose |
Question 2
The monomers in starch are joined together by which type of linkage?
beta 1-4 glycosidic linkage |
alpha 1-4 glycosidic linkage |
alpha 1-6 glycosidic linkage |
Question 3
Glycogen is: (select all that are correct)
a polymer of glucose |
a long chain molecule with very few if any branches |
an energy storage carbohydrate in plants |
a highly branched molecule with alpha 1-4 & alpha 1-6 glycosidic linkages |
has many beta 1-4 glycosidic linkages |
an energy storage carbohydrate in animals |
Question 4
What type of reaction will break down glycogen and produce glucose molecules?
Dehydration |
polymerization |
depolymerization |
Hydrolysis |
Question 5
Cellulose is: (select all that apply).
an energy storage carbohydrate in plants |
has both alpha 1-4 and beta 1-4 glycosidic linkages |
a structural carbohydrate in plant cell walls |
a polymer of glucose |
a structural carbohydrate in animals |
Question 6
In cellulose, covalent bonds link glucose monomers and hydrogen bonds hold the long glucose chains together.
True |
False |
Question 7
Chitin is: (select all that apply)
a polymer of glucose |
can be used as sutures |
a structural carbohydrate in plants |
a structural polysaccaride found in the exoskeleton of animals like arthropods |
an energy storage carbohydrate in animals |
Question 8
Lipids are not true polymers?
True |
False |
Question 9
Steroids are lipids
True |
False |
Question 10
A fat is composed of
4 fused carbon rings |
a glycerol and 3 fatty acids |
a phosphate a glycerol and 2 fatty acid chains |