What two functional groups are bound to the central carbon of every free amino acid monomer? a. an R-group and a hydroxyl group b. an N–H group and a carbonyl group c. an amino group and a hydroxyl group d. an amino group and a carboxyl group

Question

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Answer 1

Textbook Question

Chapter 3, Problem 1TYK

What two functional groups are bound to the central carbon of every free amino acid monomer?

a. an R-group and a hydroxyl group

b. an N–H group and a carbonyl group

c. an amino group and a hydroxyl group

d. an amino group and a carboxyl group

Expert Solution & Answer

Summary Introduction

Introduction:

The amino acid is the basic structural unit of the proteins. There are total 20 amino acids found in the living system. At isoelectric point (pH or potential of hydrogen), an amino acid does not have any net charge. The basic structure of amino acids is shown below:

Biological Science (6th Edition), Chapter 3, Problem 1TYK

Answer to Problem 1TYK

Correct answer:

An amino group and a carboxyl group

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as a carboxyl group along with an amino group. Functional groups of amino acids are responsible for bonding between two amino acids. The polypeptide chain consists of several amino acids. When a peptide bond is formed, a hydroxyl (–OH) group is lost from the carboxyl group of an amino acid and an H (hydrogen atom) from the amino group of another amino acid is also lost. This dehydration (loss of one H₂O molecule) reaction results in a peptide bond. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as an R- group and a hydroxyl group. R group or side chain decides the identity of an amino acid, for example, glycine, which is the simplest amino acid, has a hydrogen atom as its R group. So, it is a wrong answer.

Option (b) is given as an N-H group and a carbonyl group. Any functional group, which has an O (oxygen) atom attached to the C (carbon) atom through double bond (-C=O) is called carbonyl group. COOH (carboxylic acid) is also a type of the carbonyl group. So, it is a wrong answer.

Option (c) is given as an amino group and a hydroxyl group. The carboxylic acid of the amino acid contains one hydroxyl group, which gets lost when the amino acid undergoes peptide bond formation with an amino group of another amino acid. So, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

The amino group and a carboxyl group are functional groups bounded to the central carbon of every free amino acid monomer.

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Students have asked these similar questions

Adjacent amino acids are linked together by the formation of a peptide bond between which of the following? A. An R group and a carboxyl group B. Two R groups C. An amine group and a carboxyl group D. Two amine groups

What is the chemical difference between cellulose and chitin? Select one: a. Replacement of the hydroxyl group at C5 with an acetylated amino group b. Replacement of the hydroxyl group at C3 with an acetylated amino group c. Replacement of the hydroxyl group at C4 with an acetylated amino group d. Replacement of the hydroxyl group at C2 with an acetylated amino group

At the center of all 20 standard amino acids is what is termed the a-carbon that is covalently bonded with four other chemical groups. Which of these four chemical groups is not a normal component of all amino acids? A. an amino group B. a carboxyl group C. a side chain (R group) D. a methyl group

Answer 2

Textbook Question

Chapter 3, Problem 1TYK

What two functional groups are bound to the central carbon of every free amino acid monomer?

a. an R-group and a hydroxyl group

b. an N–H group and a carbonyl group

c. an amino group and a hydroxyl group

d. an amino group and a carboxyl group

Expert Solution & Answer

Summary Introduction

Introduction:

The amino acid is the basic structural unit of the proteins. There are total 20 amino acids found in the living system. At isoelectric point (pH or potential of hydrogen), an amino acid does not have any net charge. The basic structure of amino acids is shown below:

Biological Science (6th Edition), Chapter 3, Problem 1TYK

Answer to Problem 1TYK

Correct answer:

An amino group and a carboxyl group

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as a carboxyl group along with an amino group. Functional groups of amino acids are responsible for bonding between two amino acids. The polypeptide chain consists of several amino acids. When a peptide bond is formed, a hydroxyl (–OH) group is lost from the carboxyl group of an amino acid and an H (hydrogen atom) from the amino group of another amino acid is also lost. This dehydration (loss of one H₂O molecule) reaction results in a peptide bond. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as an R- group and a hydroxyl group. R group or side chain decides the identity of an amino acid, for example, glycine, which is the simplest amino acid, has a hydrogen atom as its R group. So, it is a wrong answer.

Option (b) is given as an N-H group and a carbonyl group. Any functional group, which has an O (oxygen) atom attached to the C (carbon) atom through double bond (-C=O) is called carbonyl group. COOH (carboxylic acid) is also a type of the carbonyl group. So, it is a wrong answer.

Option (c) is given as an amino group and a hydroxyl group. The carboxylic acid of the amino acid contains one hydroxyl group, which gets lost when the amino acid undergoes peptide bond formation with an amino group of another amino acid. So, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

The amino group and a carboxyl group are functional groups bounded to the central carbon of every free amino acid monomer.

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Answer 3

Textbook Question

Chapter 3, Problem 1TYK

What two functional groups are bound to the central carbon of every free amino acid monomer?

a. an R-group and a hydroxyl group

b. an N–H group and a carbonyl group

c. an amino group and a hydroxyl group

d. an amino group and a carboxyl group

Expert Solution & Answer

Summary Introduction

Introduction:

The amino acid is the basic structural unit of the proteins. There are total 20 amino acids found in the living system. At isoelectric point (pH or potential of hydrogen), an amino acid does not have any net charge. The basic structure of amino acids is shown below:

Biological Science (6th Edition), Chapter 3, Problem 1TYK

Answer to Problem 1TYK

Correct answer:

An amino group and a carboxyl group

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as a carboxyl group along with an amino group. Functional groups of amino acids are responsible for bonding between two amino acids. The polypeptide chain consists of several amino acids. When a peptide bond is formed, a hydroxyl (–OH) group is lost from the carboxyl group of an amino acid and an H (hydrogen atom) from the amino group of another amino acid is also lost. This dehydration (loss of one H₂O molecule) reaction results in a peptide bond. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as an R- group and a hydroxyl group. R group or side chain decides the identity of an amino acid, for example, glycine, which is the simplest amino acid, has a hydrogen atom as its R group. So, it is a wrong answer.

Option (b) is given as an N-H group and a carbonyl group. Any functional group, which has an O (oxygen) atom attached to the C (carbon) atom through double bond (-C=O) is called carbonyl group. COOH (carboxylic acid) is also a type of the carbonyl group. So, it is a wrong answer.

Option (c) is given as an amino group and a hydroxyl group. The carboxylic acid of the amino acid contains one hydroxyl group, which gets lost when the amino acid undergoes peptide bond formation with an amino group of another amino acid. So, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

The amino group and a carboxyl group are functional groups bounded to the central carbon of every free amino acid monomer.

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Answer 4

Textbook Question

Chapter 3, Problem 1TYK

What two functional groups are bound to the central carbon of every free amino acid monomer?

a. an R-group and a hydroxyl group

b. an N–H group and a carbonyl group

c. an amino group and a hydroxyl group

d. an amino group and a carboxyl group

Expert Solution & Answer

Summary Introduction

Introduction:

The amino acid is the basic structural unit of the proteins. There are total 20 amino acids found in the living system. At isoelectric point (pH or potential of hydrogen), an amino acid does not have any net charge. The basic structure of amino acids is shown below:

Biological Science (6th Edition), Chapter 3, Problem 1TYK

Answer to Problem 1TYK

Correct answer:

An amino group and a carboxyl group

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as a carboxyl group along with an amino group. Functional groups of amino acids are responsible for bonding between two amino acids. The polypeptide chain consists of several amino acids. When a peptide bond is formed, a hydroxyl (–OH) group is lost from the carboxyl group of an amino acid and an H (hydrogen atom) from the amino group of another amino acid is also lost. This dehydration (loss of one H₂O molecule) reaction results in a peptide bond. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as an R- group and a hydroxyl group. R group or side chain decides the identity of an amino acid, for example, glycine, which is the simplest amino acid, has a hydrogen atom as its R group. So, it is a wrong answer.

Option (b) is given as an N-H group and a carbonyl group. Any functional group, which has an O (oxygen) atom attached to the C (carbon) atom through double bond (-C=O) is called carbonyl group. COOH (carboxylic acid) is also a type of the carbonyl group. So, it is a wrong answer.

Option (c) is given as an amino group and a hydroxyl group. The carboxylic acid of the amino acid contains one hydroxyl group, which gets lost when the amino acid undergoes peptide bond formation with an amino group of another amino acid. So, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

The amino group and a carboxyl group are functional groups bounded to the central carbon of every free amino acid monomer.

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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

Summary Introduction

Introduction:

The amino acid is the basic structural unit of the proteins. There are total 20 amino acids found in the living system. At isoelectric point (pH or potential of hydrogen), an amino acid does not have any net charge. The basic structure of amino acids is shown below:

Biological Science (6th Edition), Chapter 3, Problem 1TYK

Answer to Problem 1TYK

Correct answer:

An amino group and a carboxyl group

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as a carboxyl group along with an amino group. Functional groups of amino acids are responsible for bonding between two amino acids. The polypeptide chain consists of several amino acids. When a peptide bond is formed, a hydroxyl (–OH) group is lost from the carboxyl group of an amino acid and an H (hydrogen atom) from the amino group of another amino acid is also lost. This dehydration (loss of one H₂O molecule) reaction results in a peptide bond. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as an R- group and a hydroxyl group. R group or side chain decides the identity of an amino acid, for example, glycine, which is the simplest amino acid, has a hydrogen atom as its R group. So, it is a wrong answer.

Option (b) is given as an N-H group and a carbonyl group. Any functional group, which has an O (oxygen) atom attached to the C (carbon) atom through double bond (-C=O) is called carbonyl group. COOH (carboxylic acid) is also a type of the carbonyl group. So, it is a wrong answer.

Option (c) is given as an amino group and a hydroxyl group. The carboxylic acid of the amino acid contains one hydroxyl group, which gets lost when the amino acid undergoes peptide bond formation with an amino group of another amino acid. So, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

The amino group and a carboxyl group are functional groups bounded to the central carbon of every free amino acid monomer.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The amino acid is the basic structural unit of the proteins. There are total 20 amino acids found in the living system. At isoelectric point (pH or potential of hydrogen), an amino acid does not have any net charge. The basic structure of amino acids is shown below:

Biological Science (6th Edition), Chapter 3, Problem 1TYK

Answer to Problem 1TYK

Correct answer:

An amino group and a carboxyl group

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as a carboxyl group along with an amino group. Functional groups of amino acids are responsible for bonding between two amino acids. The polypeptide chain consists of several amino acids. When a peptide bond is formed, a hydroxyl (–OH) group is lost from the carboxyl group of an amino acid and an H (hydrogen atom) from the amino group of another amino acid is also lost. This dehydration (loss of one H₂O molecule) reaction results in a peptide bond. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as an R- group and a hydroxyl group. R group or side chain decides the identity of an amino acid, for example, glycine, which is the simplest amino acid, has a hydrogen atom as its R group. So, it is a wrong answer.

Option (b) is given as an N-H group and a carbonyl group. Any functional group, which has an O (oxygen) atom attached to the C (carbon) atom through double bond (-C=O) is called carbonyl group. COOH (carboxylic acid) is also a type of the carbonyl group. So, it is a wrong answer.

Option (c) is given as an amino group and a hydroxyl group. The carboxylic acid of the amino acid contains one hydroxyl group, which gets lost when the amino acid undergoes peptide bond formation with an amino group of another amino acid. So, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

The amino group and a carboxyl group are functional groups bounded to the central carbon of every free amino acid monomer.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The amino acid is the basic structural unit of the proteins. There are total 20 amino acids found in the living system. At isoelectric point (pH or potential of hydrogen), an amino acid does not have any net charge. The basic structure of amino acids is shown below:

Biological Science (6th Edition), Chapter 3, Problem 1TYK

Answer 12

Answer to Problem 1TYK

Correct answer:

An amino group and a carboxyl group

Answer 13

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as a carboxyl group along with an amino group. Functional groups of amino acids are responsible for bonding between two amino acids. The polypeptide chain consists of several amino acids. When a peptide bond is formed, a hydroxyl (–OH) group is lost from the carboxyl group of an amino acid and an H (hydrogen atom) from the amino group of another amino acid is also lost. This dehydration (loss of one H₂O molecule) reaction results in a peptide bond. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as an R- group and a hydroxyl group. R group or side chain decides the identity of an amino acid, for example, glycine, which is the simplest amino acid, has a hydrogen atom as its R group. So, it is a wrong answer.

Option (b) is given as an N-H group and a carbonyl group. Any functional group, which has an O (oxygen) atom attached to the C (carbon) atom through double bond (-C=O) is called carbonyl group. COOH (carboxylic acid) is also a type of the carbonyl group. So, it is a wrong answer.

Option (c) is given as an amino group and a hydroxyl group. The carboxylic acid of the amino acid contains one hydroxyl group, which gets lost when the amino acid undergoes peptide bond formation with an amino group of another amino acid. So, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.