Asu Bio 340 Exam 3 Questions And Answerscomplete Solutions

In a molecule of DNA, cytosine is complementary to __________. {Ans: guanine}Mutations can also be the result of an addition of a base: __1__ or the removal of a base: __2__ __3__ caused by the above mutations are problematic because they shift the reading frame results. -> can change every amino acid after the point mutation {Ans: 1-insertion 2-deletion 3-frameshift mutation}Does DNA run parallel or anti parallel? {Ans: anti-parallel (strand one 5'-3')(strand 2 3'-5')}What makes up a nucleoside? {Ans: base + sugar}What are GATC methylation sites? {Ans: sites that help to regulate DNA replication}A ____________ has three components: at least one phosphate group, a pentose sugar, and a nitrogenous base. {Ans: nucleotide}How does replication know where to being? {Ans: There are specific nucleotide sequences that code for where replication begins.}Hydrogen bonds {Ans: A-T two H bonds G-C three H bonds}Because of tautomeric shift-induced mismatches, DNA replication can be no more accurate than ______ mutations/base pair {Ans: 10^-4 mutation/base pairs}The origin of replication in E. coli is termed... oriC {Ans: oriC (origin of chromosomal replication)}Nucleotides are assembled into polynucleotide chains by: a. endonuclease b. DNA pol. c. RNA pol. d. helicase