BIOLOGY 151 Lecture Notes - Lecture 14: Base Pair, Guanine, Phosphodiester Bond
Document Summary
Biology 151 with laura francis undergraduate ta notes. No discussion section this week, however i am giving you an out of class assignment that will be due in discussion next week. Review sessions both wednesday evening and thursday evening this week. Next perusall reading assignment due wednesday (tomorrow) by midnight. There"s a(cid:374)other o(cid:374)e posted that is due o(cid:272)to(cid:271)er (cid:1006)(cid:1005)st. Base pairing nucleotides: hydrogen bonds the bonds between nucleotides (a:t and g:c) are hydrogen bonds. Hydrogen bonds are non-covalent bonds which are relatively weak, however due to the number of hydrogen bonds in a strand of dna, they are collectively strong. Hydrogen bonds between the nucleotides can be broken requires energy. Adenine and thymine 2 hydrogen bonds. There are 2 hydrogen bonds that hold adenine and thymine together: less energy to break apart a:t bonds than c:g bonds, because. Cytosine and guanine 3 hydrogen bonds there are less bonds in between a:t.
