To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false. Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain. There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

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Answer 1

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 26, Problem 26.106EP

(a)

Interpretation Introduction

Interpretation: To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain.

There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

(b)

Interpretation Introduction

Interpretation: To identify whether the statement “the molecule H2S is released in the first step of the degradation of the amino acid cysteine” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine gives pyruvate as the degradation product. The degradation of cysteine is a two-step process.

(c)

Interpretation Introduction

Interpretation: To identify whether the statement “the first step in the synthesis of cysteine from serine is an activation step” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

(d)

Interpretation Introduction

Interpretation: To identify whether the statement “in the synthesis of cysteine from serine it is H2S molecule that supplies the sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

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In the solid state, oxalic acid occurs as a dihydrate with the formula H2C2O4 C+2H2O. Use this formula to calculate the formula weight of oxalic acid. Use the calculated formula weight and the number of moles (0.00504mol) of oxalic acid in each titrated unknown sample recorded in Table 6.4 to calculate the number of grams of pure oxalic acid dihydrate contained in each titrated unknown sample.

1. Consider a pair of elements with 2p and 4p valence orbitals (e.g., N and Se). Draw their (2p and 4p AO's) radial probability plots, and sketch their angular profiles. Then, consider these orbitals from the two atoms forming a homonuclear л-bond. Which element would have a stronger bond, and why? (4 points)

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Answer 2

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 26, Problem 26.106EP

(a)

Interpretation Introduction

Interpretation: To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain.

There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

(b)

Interpretation Introduction

Interpretation: To identify whether the statement “the molecule H2S is released in the first step of the degradation of the amino acid cysteine” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine gives pyruvate as the degradation product. The degradation of cysteine is a two-step process.

(c)

Interpretation Introduction

Interpretation: To identify whether the statement “the first step in the synthesis of cysteine from serine is an activation step” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

(d)

Interpretation Introduction

Interpretation: To identify whether the statement “in the synthesis of cysteine from serine it is H2S molecule that supplies the sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Expert Solution & Answer

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Answer 3

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 26, Problem 26.106EP

(a)

Interpretation Introduction

Interpretation: To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain.

There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

(b)

Interpretation Introduction

Interpretation: To identify whether the statement “the molecule H2S is released in the first step of the degradation of the amino acid cysteine” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine gives pyruvate as the degradation product. The degradation of cysteine is a two-step process.

(c)

Interpretation Introduction

Interpretation: To identify whether the statement “the first step in the synthesis of cysteine from serine is an activation step” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

(d)

Interpretation Introduction

Interpretation: To identify whether the statement “in the synthesis of cysteine from serine it is H2S molecule that supplies the sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 26, Problem 26.106EP

(a)

Interpretation Introduction

Interpretation: To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain.

There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

(b)

Interpretation Introduction

Interpretation: To identify whether the statement “the molecule H2S is released in the first step of the degradation of the amino acid cysteine” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine gives pyruvate as the degradation product. The degradation of cysteine is a two-step process.

(c)

Interpretation Introduction

Interpretation: To identify whether the statement “the first step in the synthesis of cysteine from serine is an activation step” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

(d)

Interpretation Introduction

Interpretation: To identify whether the statement “in the synthesis of cysteine from serine it is H2S molecule that supplies the sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 26, Problem 26.106EP

(a)

Interpretation Introduction

Interpretation: To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain.

There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

(b)

Interpretation Introduction

Interpretation: To identify whether the statement “the molecule H2S is released in the first step of the degradation of the amino acid cysteine” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine gives pyruvate as the degradation product. The degradation of cysteine is a two-step process.

(c)

Interpretation Introduction

Interpretation: To identify whether the statement “the first step in the synthesis of cysteine from serine is an activation step” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

(d)

Interpretation Introduction

Interpretation: To identify whether the statement “in the synthesis of cysteine from serine it is H2S molecule that supplies the sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Answer 6

Chapter 26, Problem 26.106EP

(a)

Interpretation Introduction

Interpretation: To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain.

There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

Answer 7

Chapter 26, Problem 26.106EP

(a)

Interpretation Introduction

Interpretation: To identify whether the statement “cysteine and serine are standard amino acids that contain the element sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: Amino acids are the biomolecules which contain an amino group, carboxylic acid group, and an alkyl chain. Amino acids are the main building block of protein molecules. A large number of amino acids condense together to form a polypeptide chain.

There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

Answer 8

(b)

Interpretation Introduction

Interpretation: To identify whether the statement “the molecule H2S is released in the first step of the degradation of the amino acid cysteine” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine gives pyruvate as the degradation product. The degradation of cysteine is a two-step process.

Answer 9

(b)

Interpretation Introduction

Interpretation: To identify whether the statement “the molecule H2S is released in the first step of the degradation of the amino acid cysteine” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. These are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagines, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine gives pyruvate as the degradation product. The degradation of cysteine is a two-step process.

Answer 10

(c)

Interpretation Introduction

Interpretation: To identify whether the statement “the first step in the synthesis of cysteine from serine is an activation step” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Answer 11

(c)

Interpretation Introduction

Interpretation: To identify whether the statement “the first step in the synthesis of cysteine from serine is an activation step” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Answer 12

(d)

Interpretation Introduction

Interpretation: To identify whether the statement “in the synthesis of cysteine from serine it is H2S molecule that supplies the sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Answer 13

(d)

Interpretation Introduction

Interpretation: To identify whether the statement “in the synthesis of cysteine from serine it is H2S molecule that supplies the sulfur” concerning sulfur-containing amino acids is true or false.

Concept introduction: There are 20 amino acids present in nature. Only two of the twenty amino acids have a sulfur atom in their structure. The two amino acids are cysteine and methionine. The structure of cysteine is:

Cysteine is biosynthesized from serine that involves two steps.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 26.1 - Which of the following statements about dietary...Ch. 26.1 - Dietary protein materials as they leave the...Ch. 26.1 - The inactive form of pepsin is converted to its...Ch. 26.1 - Which of the following is not a proteolytic...Ch. 26.2 - The dominant use for the amino acids of the amino...Ch. 26.2 - The most abundant amino acid in the amino acid...Ch. 26.2 - Prob. 3QQ Ch. 26.3 - Prob. 1QQ Ch. 26.3 - Prob. 2QQ Ch. 26.3 - The net effect of transamination is to collect the...

Solution Summary: The author identifies whether the statement "cysteine and serine are standard amino acids that contain the element sulfur" is true or false.

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