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 nucleic acids . It is also indicated that to show how base pairing would be affected if the bases existed in the enol form. Concept introduction: A parent DNA molecule consists of two poly nucleotide chains held together by bonds between complementary nitrogen bases. 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.

Question

Want to see the full answer?

Answer 1

Question

Chapter 26.3, Problem 5P

Interpretation Introduction

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 nucleic acids. It is also indicated that to show how base pairing would be affected if the bases existed in the enol form.

Concept introduction:

A parent DNA molecule consists of two poly nucleotide chains held together by bonds between complementary nitrogen bases.

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.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

& Calculate the molar enthalpy of combustion (A combH) of 1.80 g of pyruvic acid (CH3COCOOH; 88.1 g mol-1) at 37 °C when they are combusted in a calorimeter at constant volume with a calorimeter constant = 1.62 kJ °C-1 and the temperature rose by 1.55 °C. Given: R = 8.314 J mol −1 °C-1 and the combustion reaction: AN C3H4O3 + 2.502(g) → 3CO2(g) + 2H2O(l)

An unknown salt, AB, has the following precipitation reaction:A+(aq) + B-(aq) ⇌ AB(s) the K value for this reaction is 4.50 x10-6. Draw a model that represents what will happen when 1.00 L each of 1.00 M solution of A+(aq) and 1.00M solution of B-(aq) are combined.

5. a) Use the rules in Example 4.4 (p. 99) and calculate sizes of octahedral and tetrahedral cavities in titanium and in zirconium. Use values for atomic radii given in Fig. 9.1 (p.291). (3 points) b) Consider the formation of carbides (MC) of these metals. Which metal is able to accommodate carbon atoms better, and which cavities (octahedral or tetrahedral) would be better suited to accommodate C atoms into metal's lattice? (4 points)