Interpretation: The hydrogen bond acceptor (A), hydrogen bond donor (D) or both (D/A) should be indicated on the functional groups of the five heterocyclic bases in
Concept introduction:
A parent DNA molecule consists of two poly
A base is nitrogen containing heterocyclic compound which is found in DNA and RNA.
There are mainly five nitrogen bases.
- (1) Adenine
- (2) Guanine
- (3) Cytosine
- (4) Thymine
- (5) Uracil
Hydrogen bond is a type of attractive (dipole-dipole) interaction between an electronegative atom and a hydrogen atom bonded to another electronegative atom.
In DNA, hydrogen bonding is the chemical interaction that underlies and connects the base pairing. The DNA hydrogen bonds are responsible for holding together the double helix structure.
Enol is a tautomer which exhibiting a special type of functional isomerism namely tautomerism.
Tautomerism is a special type of functional isomerism in which isomers are in dynamic equilibrium with each other.
Want to see the full answer?
Check out a sample textbook solutionChapter 26 Solutions
Organic Chemistry - MasteringChemistry
- Complete the resonance structure of the keto form and add curved arrowsarrow_forwardPlease correct answer and don't use hend raitingarrow_forwardConsider the synthetic sequence shown. Deduce and draw the structures of organic compounds A and B. Omit all byproduc HBr Mg, H₂O ROOR ether Draw product A. product A product B Draw product B. Mgarrow_forward
- Complete the curved arrow mechanism of the following double elimination reaction when 2,2-dichloro-3,3-dimethylbutane is treated with two equivalents of sodium amide and heated in mineral oil. A.) Use three curved arrows to show the elimination of the first hydrogen chloride. B.) Use three curved arrows to show the elimination of the second hydrogen chloride. C.) Complete the structure of the organic product formed from the double elimination. The ammonia and chloride ion formed in step 1 is not drawn for clarity.arrow_forwardIn electrophilic aromatic substitution, a group attached to the aromatic ring does not affect ring reactivity. Is that true or false?arrow_forward4. The following questions concern ethyl acetate, a common laboratory solvent and key ingredient in nail polish remover. a. Draw the stabilizing resonance interaction that lessens the electrophilicity of the carbonyl carbon. H- H Et b. Draw the hyperconjugation interaction that lessens the electrophilicity of the carbonyl carbon below. H- Et c. Which has the more electrophilic carbonyl carbon, ethyl acetate or phenyl acetate? Explain. io VS. ethyl acetate phenyl acetatearrow_forward
- Click the "draw structure" button to activate the drawing utility. Draw one of the organic products formed in the following reaction sequence. [1] Ph3P [2] BuLi [3] H. draw structure ...arrow_forwardcomplete the reaction by adding reagents or prodcts Please provide only typed answer solution no handwritten solution needed allowedarrow_forwardDon't provied handwriting solution.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning