BIOL 141 Lecture Notes - Lecture 5: Dehydration Reaction, Phosphodiester Bond, X-Ray
38 views2 pages
11 Mar 2018
School
Department
Course
Professor
Document Summary
Purines and pyrimidines are the nitrogen-containing bases found in the nucleotides that make up dna and rna. Purines have two rings in their structure, while pyrimidines have just one. G -- c makes three bonds together (more stable) A -- t (u) makes two bonds together. Nucleotide - the building blocks of nucleic acids. Contain a phosphate group, a sugar, and a nitrogenous base. The phosphate group is bonded to the 5" carbon sugar - essential for linkage. The oh (hydroxyl) group on the phosphate group and the 3" carbon of the sugar form a bond. Condensation or dehydration synthesis - h2o is a waste product of this linkage. This is important because these continuous linkages create the (negatively charged) sugar phosphate backbone for rna and dna. Polymerization reactions are typically endergonic (absorb energy) requiring energy input. Activated nucleotides are charged nucleotides used for energy (unique to each nucleotide)
Get access
Grade+
$40 USD/m
Billed monthly
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers
Class+
$30 USD/m
Billed monthly
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
7 Verified Answers
Related Documents
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 |