Question

14.2 Modeling the Structure and Function of Nucleic Acids and Their Products 2. The following diagram represents some of the puzzle piece pieces used in this section. a Assembled in this form, do they represent an amino acid, c. a portion of messenger RNA, or a deoxyribonucleotide (b) Explain your answer. Opo 3. Why is DNA often called a double helix? 4. State the following ratios. (a) Guanine to cytosine in a double-stranded DNA molecule: (b) Adenine to thymine: -

Answer 1

dhe puzzle 2 he fallausiog diaqxag xepresents Some pleces uped in dhu's sechion Assembledco dhis tormm do deoryoibonucleatide they represent an Explain dour Chis diagron contain nitrogen base ibase sugaz phasphate qmup therefore this diagray sof deaxyribanucleatide answens deary why DNA often called a double helix DNA double helixstructuxe is prapased by a DNA malecule Watson & Crick dde ated that consi'sts two dtramds dhus stxands are coiled asound at central axi's Limaginany 4 Form double helix Guanine to in a double stranded Cytosine DNA molecule thymine 6Adenine to axe complem.entary Because they4 do each odher allaning terms 5 Depne he Replicatian - The p seplicatian s hich DNA malecule produces exact capy/ a process cn at 's caled as replicatiag CS ScannedpwiR itsel CamScanner

Transcriptes 3isa process in which mRNA Ls ONA teamplate is called trans cziptian T is disided into 3 Grages Initiaton foers Elangatog ter min atian Translatias B i'sa pYocess cn which the sequence k codons og m RNA tYand is used acids ane hen amipo jained tn each others tfoma palypep hde chais k org proteis s called translatiag Cadao It is he MRNA is called codan a seauence d 3 RNA nucleahides Codon ase used far cade the amino arid e Anticadan- 3 nucleatide dt tRNA to codan af They forg hydma en binds in the translatiag seauence & they cemplementary m RNA ore pxecess what does it mean to say dhat NA xeplication i's semicansexvative Becawe co his process two capies ef tprmed by oxeginal is orginal strand odh er INA malecule s are CS Scanned with Capy CamScanner

is neuty txand theretare caled as semicansexvative replicatiag Bare seauence t ATGGCCTAG rand one Seauence ohex rand is TACCGGATC Template rand ATGGCCTAG RNA Qrand is UACCGGAUC & Transcriphan takes place co ATA theg ற ச ahep from UAu fam Turosine UAU ONA sequence has Seauence ATG theg RNA 6rand sequence is UAC UAC Code the Tyrosine amino acid Scanned with CS CamScanner