BIOSC-101 Lecture Notes - Lecture 4: Polysaccharide, Lipid Bilayer, Macromolecule
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9 Sep 2020
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Organic molecules that consist of carbon, hydrogen, and oxygen atoms in a. A single sugar (carbohydrate) monomer is called a monosaccharide. Two sugar monomers bonded together form a disaccharide. A carbohydrate made of 2 monosaccharides linked together by a covalent bond. A carbohydrate that consists of long chains of monosaccharides bonded together. Glucose is used by plants and animals as an important energy storage molecule when used as the monomer to create a carbohydrate macromolecule. Lipids are a diverse group of macromolecules united by their hydrophobic, nonpolar nature. We are most familiar with the lipids known as fats. Fats are used to store energy for later use. They also provide structural support and cushioning for many animals. The subunit of lipids is fatty acids. Waxes are nonpolar lipids that form protective layers on plants and animals. Fats and oils are also called triglycerides because they are made of 3 fatty acids attached to one glycerol.
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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 |