BIO130H1 Lecture Notes - Lecture 3: Deoxyribonucleoside, Ribonucleoside, Cell Nucleus

21 views14 pages
School
Department
Course
Professor
ash-mr18 and 40043 others unlocked
BIO130H1 Full Course Notes
31
BIO130H1 Full Course Notes
Verified Note
31 documents

Document Summary

Lecture 3: introduction to nucleic acids & proteins. Interactions b/w individual molecules usually mediated by non-covalent attractions: hydrogen bonds: special polar interaction where the hydrogen can be viewed as a proton partially shared. Individually, very weak forces but can sum to generate strong binding b/w molecules. Therefore within a molecule, bonds will be covalent. Overview of nucleic acids: remember, they are linear chains, polymers of individual sub-units, each chain has a specific orientation defined by a chemical group which gives it fixed polarity. Base pairing: holds the dna double helix together, a t. Sugar-phosphate backbones are anti-parallel (run opposite to each other: dna is 2 strands (like separate molecules) 2 molecules with hydrogen bonds between them. The sequence of the 2 strands are: complementary. This is important for: dna replication, rna synthesis. Unzipping the helix: heating denatures double-stranded dna by disrupting the hydrogen bonds b/w bases, denaturation of dna is a reversible process.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related textbook solutions

Related Documents

Related Questions