REFLECT AND APPLY Consider the following in light of the concept of levels of structure (primary, secondary, tertiary, quaternary) as defined for proteins. (a) What level is shown by double-stranded DNA? (b) What level is shown by tRNA? (c) What level is shown by mRNA?

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 9, Problem 1RE

REFLECT AND APPLY Consider the following in light of the concept of levels of structure (primary, secondary, tertiary, quaternary) as defined for proteins.

(a) What level is shown by double-stranded DNA?

(b) What level is shown by tRNA?

(c) What level is shown by mRNA?

Expert Solution & Answer

Interpretation Introduction

Interpretation:

Corresponding to the different levels of protein structure, the structural level existing in the given three nucleic acid molecules is to be determined.

Concept introduction:

Proteins are polymers of amino acids that are composed of one or more polypeptide chains. Several amino acids are linked to each other via a peptide bond to form a polypeptide chain. The structure of a protein is thus dependent on the degree of complexity of the polypeptide chains.

Based on the complexity of the polypeptide chains, protein structures can be classified as primary, secondary, tertiary, and quaternary. The primary structure is the simplest structure and describes the linear arrangement of amino acids to form a polypeptide chain. Folding of the polypeptide chains due to interactions between atoms of the backbone form the secondary structure.

Further folding due to the interactions between the R groups of amino acids to form a 3D structure of a protein is referred to as the tertiary structure. Presence of two or more polypeptide chains (subunits) in a 3D conformation within a single protein comprises the quaternary structure.

Answer to Problem 1RE

Solution:

a) Secondary structure

b) Tertiary structure

c) Primary structure

Explanation of Solution

a) The level of double-stranded DNA.

Double-stranded DNA is composed of two strands of opposite polarity that are twisted around each other. The backbone of these strands is made up of alternating deoxyribose and phosphate groups and each deoxyribose is linked with one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The bonds formed between the bases (A-T and G=C) is responsible for the two strands of the double-stranded DNA being held together.

In the secondary structure of proteins, the polypeptide chains fold and are held together by the interactions between the atoms of the backbone. Similarly, in double-stranded DNA, the two strands are held together by the interaction between bases present on the two strands.

Therefore, double-stranded DNA is considered to have a secondary structure.

b) The level of tRNA.

Transfer RNA, as the name suggests, acts as an adaptor molecule that transfer the amino acid residues to the growing polypeptide chain during the process of translation. tRNA can have a primary structure, clover-shaped secondary structure, or a 3D L-shaped tertiary structure. The L-shaped structure of tRNA is bonded and stabilized by the base pairing between nucleotides in the D loop and the TΨC loop.

During the process of translation, the tertiary structure of the tRNA plays a major role as it fits into the P and A sites of the ribosome and allows the addition of amino acids to the growing polypeptide chain.

Therefore, tRNA is considered to have a tertiary structure.

c) The level of mRNA.

Messenger RNA is the chief RNA molecule that acts as a messenger to transfer the genetic information stored in the DNA to the ribosomes to generate the corresponding protein sequences. mRNA is generated from the nucleotide sequences which are complementary to the template strand of DNA during the process of transcription.

mRNA is single-stranded and also lacks any major folding or secondary structures.

Therefore, mRNA is considered to have a primary structure.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

When was the dihydropyridine calcium channel blocker isradipine first patented and by whom? Please provide information on the origin and history of isradipine and who owns it/manufactures it.

9) Below, there is a representation of an SDS-PAGE gel. Assuming the samples in the MW standard have masses of: 66 kDa, 45 kDa, 36 kDa, 29 kDa, 24 kDa, 20.1 kDa, and 14.2 kDa, a) Figure 4: indicate where each of the measurements were taken and label as in II.6. figure 2 above. b) As in II.7. Table 1 above create Table 2 using the data below. Determine the r.f. values for the MW standards, plot the relative mobility versus the log of the mass for the standards, and use the best fit straight line to determine the molecular weights of the proteins in the whey, peak 1, and peak 2 lanes. (5 pts—this will be scaled up appropriately if your gel did not develop properly) dye MW Whey Peak 1 Peak 2

what are the different classes and some examples of neuroprotectants that can be used to treat, prevent, or combat neurotoxicity/a neurotoxicant...for example, antioxidants, nutraceuticals, etc.,..?

Answer 2

Textbook Question

Chapter 9, Problem 1RE

REFLECT AND APPLY Consider the following in light of the concept of levels of structure (primary, secondary, tertiary, quaternary) as defined for proteins.

(a) What level is shown by double-stranded DNA?

(b) What level is shown by tRNA?

(c) What level is shown by mRNA?

Expert Solution & Answer

Interpretation Introduction

Interpretation:

Corresponding to the different levels of protein structure, the structural level existing in the given three nucleic acid molecules is to be determined.

Concept introduction:

Proteins are polymers of amino acids that are composed of one or more polypeptide chains. Several amino acids are linked to each other via a peptide bond to form a polypeptide chain. The structure of a protein is thus dependent on the degree of complexity of the polypeptide chains.

Based on the complexity of the polypeptide chains, protein structures can be classified as primary, secondary, tertiary, and quaternary. The primary structure is the simplest structure and describes the linear arrangement of amino acids to form a polypeptide chain. Folding of the polypeptide chains due to interactions between atoms of the backbone form the secondary structure.

Further folding due to the interactions between the R groups of amino acids to form a 3D structure of a protein is referred to as the tertiary structure. Presence of two or more polypeptide chains (subunits) in a 3D conformation within a single protein comprises the quaternary structure.

Answer to Problem 1RE

Solution:

a) Secondary structure

b) Tertiary structure

c) Primary structure

Explanation of Solution

a) The level of double-stranded DNA.

Double-stranded DNA is composed of two strands of opposite polarity that are twisted around each other. The backbone of these strands is made up of alternating deoxyribose and phosphate groups and each deoxyribose is linked with one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The bonds formed between the bases (A-T and G=C) is responsible for the two strands of the double-stranded DNA being held together.

In the secondary structure of proteins, the polypeptide chains fold and are held together by the interactions between the atoms of the backbone. Similarly, in double-stranded DNA, the two strands are held together by the interaction between bases present on the two strands.

Therefore, double-stranded DNA is considered to have a secondary structure.

b) The level of tRNA.

Transfer RNA, as the name suggests, acts as an adaptor molecule that transfer the amino acid residues to the growing polypeptide chain during the process of translation. tRNA can have a primary structure, clover-shaped secondary structure, or a 3D L-shaped tertiary structure. The L-shaped structure of tRNA is bonded and stabilized by the base pairing between nucleotides in the D loop and the TΨC loop.

During the process of translation, the tertiary structure of the tRNA plays a major role as it fits into the P and A sites of the ribosome and allows the addition of amino acids to the growing polypeptide chain.

Therefore, tRNA is considered to have a tertiary structure.

c) The level of mRNA.

Messenger RNA is the chief RNA molecule that acts as a messenger to transfer the genetic information stored in the DNA to the ribosomes to generate the corresponding protein sequences. mRNA is generated from the nucleotide sequences which are complementary to the template strand of DNA during the process of transcription.

mRNA is single-stranded and also lacks any major folding or secondary structures.

Therefore, mRNA is considered to have a primary structure.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 9, Problem 1RE

REFLECT AND APPLY Consider the following in light of the concept of levels of structure (primary, secondary, tertiary, quaternary) as defined for proteins.

(a) What level is shown by double-stranded DNA?

(b) What level is shown by tRNA?

(c) What level is shown by mRNA?

Expert Solution & Answer

Interpretation Introduction

Interpretation:

Corresponding to the different levels of protein structure, the structural level existing in the given three nucleic acid molecules is to be determined.

Concept introduction:

Proteins are polymers of amino acids that are composed of one or more polypeptide chains. Several amino acids are linked to each other via a peptide bond to form a polypeptide chain. The structure of a protein is thus dependent on the degree of complexity of the polypeptide chains.

Based on the complexity of the polypeptide chains, protein structures can be classified as primary, secondary, tertiary, and quaternary. The primary structure is the simplest structure and describes the linear arrangement of amino acids to form a polypeptide chain. Folding of the polypeptide chains due to interactions between atoms of the backbone form the secondary structure.

Further folding due to the interactions between the R groups of amino acids to form a 3D structure of a protein is referred to as the tertiary structure. Presence of two or more polypeptide chains (subunits) in a 3D conformation within a single protein comprises the quaternary structure.

Answer to Problem 1RE

Solution:

a) Secondary structure

b) Tertiary structure

c) Primary structure

Explanation of Solution

a) The level of double-stranded DNA.

Double-stranded DNA is composed of two strands of opposite polarity that are twisted around each other. The backbone of these strands is made up of alternating deoxyribose and phosphate groups and each deoxyribose is linked with one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The bonds formed between the bases (A-T and G=C) is responsible for the two strands of the double-stranded DNA being held together.

In the secondary structure of proteins, the polypeptide chains fold and are held together by the interactions between the atoms of the backbone. Similarly, in double-stranded DNA, the two strands are held together by the interaction between bases present on the two strands.

Therefore, double-stranded DNA is considered to have a secondary structure.

b) The level of tRNA.

Transfer RNA, as the name suggests, acts as an adaptor molecule that transfer the amino acid residues to the growing polypeptide chain during the process of translation. tRNA can have a primary structure, clover-shaped secondary structure, or a 3D L-shaped tertiary structure. The L-shaped structure of tRNA is bonded and stabilized by the base pairing between nucleotides in the D loop and the TΨC loop.

During the process of translation, the tertiary structure of the tRNA plays a major role as it fits into the P and A sites of the ribosome and allows the addition of amino acids to the growing polypeptide chain.

Therefore, tRNA is considered to have a tertiary structure.

c) The level of mRNA.

Messenger RNA is the chief RNA molecule that acts as a messenger to transfer the genetic information stored in the DNA to the ribosomes to generate the corresponding protein sequences. mRNA is generated from the nucleotide sequences which are complementary to the template strand of DNA during the process of transcription.

mRNA is single-stranded and also lacks any major folding or secondary structures.

Therefore, mRNA is considered to have a primary structure.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 9, Problem 1RE

REFLECT AND APPLY Consider the following in light of the concept of levels of structure (primary, secondary, tertiary, quaternary) as defined for proteins.

(a) What level is shown by double-stranded DNA?

(b) What level is shown by tRNA?

(c) What level is shown by mRNA?

Expert Solution & Answer

Interpretation Introduction

Interpretation:

Corresponding to the different levels of protein structure, the structural level existing in the given three nucleic acid molecules is to be determined.

Concept introduction:

Proteins are polymers of amino acids that are composed of one or more polypeptide chains. Several amino acids are linked to each other via a peptide bond to form a polypeptide chain. The structure of a protein is thus dependent on the degree of complexity of the polypeptide chains.

Based on the complexity of the polypeptide chains, protein structures can be classified as primary, secondary, tertiary, and quaternary. The primary structure is the simplest structure and describes the linear arrangement of amino acids to form a polypeptide chain. Folding of the polypeptide chains due to interactions between atoms of the backbone form the secondary structure.

Further folding due to the interactions between the R groups of amino acids to form a 3D structure of a protein is referred to as the tertiary structure. Presence of two or more polypeptide chains (subunits) in a 3D conformation within a single protein comprises the quaternary structure.

Answer to Problem 1RE

Solution:

a) Secondary structure

b) Tertiary structure

c) Primary structure

Explanation of Solution

a) The level of double-stranded DNA.

Double-stranded DNA is composed of two strands of opposite polarity that are twisted around each other. The backbone of these strands is made up of alternating deoxyribose and phosphate groups and each deoxyribose is linked with one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The bonds formed between the bases (A-T and G=C) is responsible for the two strands of the double-stranded DNA being held together.

In the secondary structure of proteins, the polypeptide chains fold and are held together by the interactions between the atoms of the backbone. Similarly, in double-stranded DNA, the two strands are held together by the interaction between bases present on the two strands.

Therefore, double-stranded DNA is considered to have a secondary structure.

b) The level of tRNA.

Transfer RNA, as the name suggests, acts as an adaptor molecule that transfer the amino acid residues to the growing polypeptide chain during the process of translation. tRNA can have a primary structure, clover-shaped secondary structure, or a 3D L-shaped tertiary structure. The L-shaped structure of tRNA is bonded and stabilized by the base pairing between nucleotides in the D loop and the TΨC loop.

During the process of translation, the tertiary structure of the tRNA plays a major role as it fits into the P and A sites of the ribosome and allows the addition of amino acids to the growing polypeptide chain.

Therefore, tRNA is considered to have a tertiary structure.

c) The level of mRNA.

Messenger RNA is the chief RNA molecule that acts as a messenger to transfer the genetic information stored in the DNA to the ribosomes to generate the corresponding protein sequences. mRNA is generated from the nucleotide sequences which are complementary to the template strand of DNA during the process of transcription.

mRNA is single-stranded and also lacks any major folding or secondary structures.

Therefore, mRNA is considered to have a primary structure.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Interpretation Introduction

Interpretation:

Corresponding to the different levels of protein structure, the structural level existing in the given three nucleic acid molecules is to be determined.

Concept introduction:

Proteins are polymers of amino acids that are composed of one or more polypeptide chains. Several amino acids are linked to each other via a peptide bond to form a polypeptide chain. The structure of a protein is thus dependent on the degree of complexity of the polypeptide chains.

Based on the complexity of the polypeptide chains, protein structures can be classified as primary, secondary, tertiary, and quaternary. The primary structure is the simplest structure and describes the linear arrangement of amino acids to form a polypeptide chain. Folding of the polypeptide chains due to interactions between atoms of the backbone form the secondary structure.

Further folding due to the interactions between the R groups of amino acids to form a 3D structure of a protein is referred to as the tertiary structure. Presence of two or more polypeptide chains (subunits) in a 3D conformation within a single protein comprises the quaternary structure.

Answer to Problem 1RE

Solution:

a) Secondary structure

b) Tertiary structure

c) Primary structure

Explanation of Solution

a) The level of double-stranded DNA.

Double-stranded DNA is composed of two strands of opposite polarity that are twisted around each other. The backbone of these strands is made up of alternating deoxyribose and phosphate groups and each deoxyribose is linked with one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The bonds formed between the bases (A-T and G=C) is responsible for the two strands of the double-stranded DNA being held together.

In the secondary structure of proteins, the polypeptide chains fold and are held together by the interactions between the atoms of the backbone. Similarly, in double-stranded DNA, the two strands are held together by the interaction between bases present on the two strands.

Therefore, double-stranded DNA is considered to have a secondary structure.

b) The level of tRNA.

Transfer RNA, as the name suggests, acts as an adaptor molecule that transfer the amino acid residues to the growing polypeptide chain during the process of translation. tRNA can have a primary structure, clover-shaped secondary structure, or a 3D L-shaped tertiary structure. The L-shaped structure of tRNA is bonded and stabilized by the base pairing between nucleotides in the D loop and the TΨC loop.

During the process of translation, the tertiary structure of the tRNA plays a major role as it fits into the P and A sites of the ribosome and allows the addition of amino acids to the growing polypeptide chain.

Therefore, tRNA is considered to have a tertiary structure.

c) The level of mRNA.

Messenger RNA is the chief RNA molecule that acts as a messenger to transfer the genetic information stored in the DNA to the ribosomes to generate the corresponding protein sequences. mRNA is generated from the nucleotide sequences which are complementary to the template strand of DNA during the process of transcription.

mRNA is single-stranded and also lacks any major folding or secondary structures.

Therefore, mRNA is considered to have a primary structure.

Answer 8

Expert Solution & Answer

Interpretation Introduction

Interpretation:

Corresponding to the different levels of protein structure, the structural level existing in the given three nucleic acid molecules is to be determined.

Concept introduction:

Proteins are polymers of amino acids that are composed of one or more polypeptide chains. Several amino acids are linked to each other via a peptide bond to form a polypeptide chain. The structure of a protein is thus dependent on the degree of complexity of the polypeptide chains.

Based on the complexity of the polypeptide chains, protein structures can be classified as primary, secondary, tertiary, and quaternary. The primary structure is the simplest structure and describes the linear arrangement of amino acids to form a polypeptide chain. Folding of the polypeptide chains due to interactions between atoms of the backbone form the secondary structure.

Further folding due to the interactions between the R groups of amino acids to form a 3D structure of a protein is referred to as the tertiary structure. Presence of two or more polypeptide chains (subunits) in a 3D conformation within a single protein comprises the quaternary structure.

Answer to Problem 1RE

Solution:

a) Secondary structure

b) Tertiary structure

c) Primary structure

Explanation of Solution

a) The level of double-stranded DNA.

Double-stranded DNA is composed of two strands of opposite polarity that are twisted around each other. The backbone of these strands is made up of alternating deoxyribose and phosphate groups and each deoxyribose is linked with one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The bonds formed between the bases (A-T and G=C) is responsible for the two strands of the double-stranded DNA being held together.

In the secondary structure of proteins, the polypeptide chains fold and are held together by the interactions between the atoms of the backbone. Similarly, in double-stranded DNA, the two strands are held together by the interaction between bases present on the two strands.

Therefore, double-stranded DNA is considered to have a secondary structure.

b) The level of tRNA.

Transfer RNA, as the name suggests, acts as an adaptor molecule that transfer the amino acid residues to the growing polypeptide chain during the process of translation. tRNA can have a primary structure, clover-shaped secondary structure, or a 3D L-shaped tertiary structure. The L-shaped structure of tRNA is bonded and stabilized by the base pairing between nucleotides in the D loop and the TΨC loop.

During the process of translation, the tertiary structure of the tRNA plays a major role as it fits into the P and A sites of the ribosome and allows the addition of amino acids to the growing polypeptide chain.

Therefore, tRNA is considered to have a tertiary structure.

c) The level of mRNA.

Messenger RNA is the chief RNA molecule that acts as a messenger to transfer the genetic information stored in the DNA to the ribosomes to generate the corresponding protein sequences. mRNA is generated from the nucleotide sequences which are complementary to the template strand of DNA during the process of transcription.

mRNA is single-stranded and also lacks any major folding or secondary structures.

Therefore, mRNA is considered to have a primary structure.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Interpretation Introduction

Interpretation:

Corresponding to the different levels of protein structure, the structural level existing in the given three nucleic acid molecules is to be determined.

Concept introduction:

Proteins are polymers of amino acids that are composed of one or more polypeptide chains. Several amino acids are linked to each other via a peptide bond to form a polypeptide chain. The structure of a protein is thus dependent on the degree of complexity of the polypeptide chains.

Based on the complexity of the polypeptide chains, protein structures can be classified as primary, secondary, tertiary, and quaternary. The primary structure is the simplest structure and describes the linear arrangement of amino acids to form a polypeptide chain. Folding of the polypeptide chains due to interactions between atoms of the backbone form the secondary structure.

Further folding due to the interactions between the R groups of amino acids to form a 3D structure of a protein is referred to as the tertiary structure. Presence of two or more polypeptide chains (subunits) in a 3D conformation within a single protein comprises the quaternary structure.

Answer 12

Answer to Problem 1RE

Solution:

a) Secondary structure

b) Tertiary structure

c) Primary structure

Answer 13

Explanation of Solution

a) The level of double-stranded DNA.

Double-stranded DNA is composed of two strands of opposite polarity that are twisted around each other. The backbone of these strands is made up of alternating deoxyribose and phosphate groups and each deoxyribose is linked with one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The bonds formed between the bases (A-T and G=C) is responsible for the two strands of the double-stranded DNA being held together.

In the secondary structure of proteins, the polypeptide chains fold and are held together by the interactions between the atoms of the backbone. Similarly, in double-stranded DNA, the two strands are held together by the interaction between bases present on the two strands.

Therefore, double-stranded DNA is considered to have a secondary structure.

b) The level of tRNA.

Transfer RNA, as the name suggests, acts as an adaptor molecule that transfer the amino acid residues to the growing polypeptide chain during the process of translation. tRNA can have a primary structure, clover-shaped secondary structure, or a 3D L-shaped tertiary structure. The L-shaped structure of tRNA is bonded and stabilized by the base pairing between nucleotides in the D loop and the TΨC loop.

During the process of translation, the tertiary structure of the tRNA plays a major role as it fits into the P and A sites of the ribosome and allows the addition of amino acids to the growing polypeptide chain.

Therefore, tRNA is considered to have a tertiary structure.

c) The level of mRNA.

Messenger RNA is the chief RNA molecule that acts as a messenger to transfer the genetic information stored in the DNA to the ribosomes to generate the corresponding protein sequences. mRNA is generated from the nucleotide sequences which are complementary to the template strand of DNA during the process of transcription.

mRNA is single-stranded and also lacks any major folding or secondary structures.

Therefore, mRNA is considered to have a primary structure.

Answer 14

Ch. 9 - REFLECT AND APPLY Consider the following in light...Ch. 9 - Prob. 2RE Ch. 9 - RECALL What is the structural difference between...Ch. 9 - RECALL Give the name of the base, the...Ch. 9 - RECALL What is the difference between ATP and...Ch. 9 - RECALL Give the sequence on the opposite strand...Ch. 9 - RECALL Are the sequences shown in Question 6 those...Ch. 9 - REFLECT AND APPLY (a) Is it biologically...Ch. 9 - REFLECT AND APPLY A friend tells you that only...Ch. 9 - REFLECT AND APPLY In the early days of molecular...

REFLECT AND APPLY Consider the following in light of the concept of levels of structure (primary, secondary, tertiary, quaternary) as defined for proteins. (a) What level is shown by double-stranded DNA? (b) What level is shown by tRNA? (c) What level is shown by mRNA?

Concept explainers

Videos

Answer to Problem 1RE

Explanation of Solution

Want to see more full solutions like this?

Chapter 9 Solutions