(a) Interpretation: The reason corresponding to the fact that the two purine bases ( A and G ) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated. Concept introduction: The building block of DNA and RNA is nucleotide . There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond .

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Answer 1

Question

Chapter 28, Problem 28.36P

Interpretation Introduction

(a)

Interpretation: The reason corresponding to the fact that the two purine bases (A and G) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Interpretation Introduction

(b)

Interpretation: The reason corresponding to the fact that the hydrogen bonding between guanine and cytosine is more favorable than hydrogen bonding between guanine and thymine is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. It is an organic molecule. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

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(a) Why can’t two purine bases (A and G) form a base pair and hydrogen bond to each other on two strands of DNA in the double helix? (b) Why is hydrogen bonding between guanine and cytosine more favorable than hydrogen bonding between guanine and thymine?

(a) Draw the chemical structure of a generic amino acid,using R for the side chain. (b) When amino acids react toform proteins, do they do so via substitution, addition,or condensation reactions? (c) Draw the bond that linksamino acids together in proteins. What is this called?

From examination of the molecular models i–v, choose thesubstance that (a) can be hydrolyzed to form a solutioncontaining glucose, (b) is capable of forming a zwitterion,(c) is one of the four bases present in DNA, (d) reacts withan acid to form an ester, (e) is a lipid.

Answer 2

Question

Chapter 28, Problem 28.36P

Interpretation Introduction

(a)

Interpretation: The reason corresponding to the fact that the two purine bases (A and G) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Interpretation Introduction

(b)

Interpretation: The reason corresponding to the fact that the hydrogen bonding between guanine and cytosine is more favorable than hydrogen bonding between guanine and thymine is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. It is an organic molecule. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

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Answer 3

Question

Chapter 28, Problem 28.36P

Interpretation Introduction

(a)

Interpretation: The reason corresponding to the fact that the two purine bases (A and G) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Interpretation Introduction

(b)

Interpretation: The reason corresponding to the fact that the hydrogen bonding between guanine and cytosine is more favorable than hydrogen bonding between guanine and thymine is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. It is an organic molecule. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

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Answer 4

Question

Chapter 28, Problem 28.36P

Interpretation Introduction

(a)

Interpretation: The reason corresponding to the fact that the two purine bases (A and G) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Interpretation Introduction

(b)

Interpretation: The reason corresponding to the fact that the hydrogen bonding between guanine and cytosine is more favorable than hydrogen bonding between guanine and thymine is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. It is an organic molecule. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

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Answer 5

Chapter 28, Problem 28.36P

Interpretation Introduction

(a)

Interpretation: The reason corresponding to the fact that the two purine bases (A and G) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Interpretation Introduction

(b)

Interpretation: The reason corresponding to the fact that the hydrogen bonding between guanine and cytosine is more favorable than hydrogen bonding between guanine and thymine is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. It is an organic molecule. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Answer 6

Chapter 28, Problem 28.36P

Interpretation Introduction

(a)

Interpretation: The reason corresponding to the fact that the two purine bases (A and G) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Answer 7

Chapter 28, Problem 28.36P

Interpretation Introduction

(a)

Interpretation: The reason corresponding to the fact that the two purine bases (A and G) cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Answer 8

Interpretation Introduction

(b)

Interpretation: The reason corresponding to the fact that the hydrogen bonding between guanine and cytosine is more favorable than hydrogen bonding between guanine and thymine is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. It is an organic molecule. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Answer 9

Interpretation Introduction

(b)

Interpretation: The reason corresponding to the fact that the hydrogen bonding between guanine and cytosine is more favorable than hydrogen bonding between guanine and thymine is to be stated.

Concept introduction: The building block of DNA and RNA is nucleotide. It is an organic molecule. There is a specific structure for each and every nucleotide which enables the formation of DNA and RNA. DNA is composed by the four nitrogenous bases. These are connected by the chemical bond.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 28 - Prob. 28.1P Ch. 28 - Prob. 28.2P Ch. 28 - Label each stereogenic center as R or S. a. b. c....Ch. 28 - Convert the ball-and-stick model to a Fischer...Ch. 28 - Prob. 28.5P Ch. 28 - Prob. 28.6P Ch. 28 - Prob. 28.7P Ch. 28 - Prob. 28.8P Ch. 28 - Prob. 28.9P Ch. 28 - Prob. 28.10P

Solution Summary: The author explains that the two purine bases cannot form a base pair and hydrogen bond to each other on two strands of DNA in the double helix.

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