
Concept explainers
(a)
Interpretation: To classify serine as (1) ketogenic, (2) glucogenic, or (3) both ketogenic and glucogenic.
Concept introduction: Genicity of an amino acid is defined as whether the carbon skeleton degradation product of an amino acid can produce glucose or
An amino acid is known as a glucogenic amino acid if its carbon-containing degradation product can be used to produce glucose. An amino acid is known as a ketogenic amino acid if its carbon-containing degradation product can be used to produce ketone bodies.
There are 20 standard amino acids. Each amino acid has a different carbon skeleton and has a different degradation pathway for its carbon skeleton. The degradation pathways for different amino acids merge in between and result in the formation of only 7 products. The 7 products are
(b)
Interpretation: To classify tyrosine as (1) ketogenic, (2) glucogenic, or (3) both ketogenic and glucogenic.
Concept introduction: Genicity of an amino acid is defined as whether the carbon skeleton degradation product of an amino acid can produce glucose or ketone bodies or not.
An amino acid is known as a glucogenic amino acid if its carbon-containing degradation product can be used to produce glucose. An amino acid is known as a ketogenic amino acid if its carbon-containing degradation product can be used to produce ketone bodies.
There are 20 standard amino acids. Each amino acid has a different carbon skeleton and has a different degradation pathway for its carbon skeleton. The degradation pathways for different amino acids merge in between and result in the formation of only 7 products. The 7 products are
(c)
Interpretation: To classify tryptophan as (1) ketogenic, (2) glucogenic, or (3) both ketogenic and glucogenic.
Concept introduction: Genicity of an amino acid is defined as whether the carbon skeleton degradation product of an amino acid can produce glucose or ketone bodies or not.
An amino acid is known as a glucogenic amino acid if its carbon-containing degradation product can be used to produce glucose. An amino acid is known as a ketogenic amino acid if its carbon-containing degradation product can be used to produce ketone bodies.
There are 20 standard amino acids. Each amino acid has a different carbon skeleton and has a different degradation pathway for its carbon skeleton. The degradation pathways for different amino acids merge in between and result in the formation of only 7 products. The 7 products are
(d)
Interpretation: To classify histidine as (1) ketogenic, (2) glucogenic, or (3) both ketogenic and glucogenic.
Concept introduction: Genicity of an amino acid is defined as whether the carbon skeleton degradation product of an amino acid can produce glucose or ketone bodies or not.
An amino acid is known as a glucogenic amino acid if its carbon-containing degradation product can be used to produce glucose. An amino acid is known as a ketogenic amino acid if its carbon-containing degradation product can be used to produce ketone bodies.
There are 20 standard amino acids. Each amino acid has a different carbon skeleton and has a different degradation pathway for its carbon skeleton. The degradation pathways for different amino acids merge in between and result in the formation of only 7 products. The 7 products are

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Chapter 26 Solutions
Study Guide with Selected Solutions for Stoker's General, Organic, and Biological Chemistry, 7th
- Please help me solve this reaction.arrow_forwardIndicate the products obtained by mixing 2,2-dimethylpropanal with acetaldehyde and sodium ethoxide in ethanol.arrow_forwardSynthesize 2-Ethyl-3-methyloxirane from dimethyl(propyl)sulfonium iodide using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forward
- Synthesize 2-Hydroxy-2-phenylacetonitrile from phenylmethanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forward
- If possible, please provide the formula of the compound 3,3-dimethylbut-2-enal.arrow_forwardSynthesize 1,4-dibromobenzene from acetanilide (N-phenylacetamide) using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardIndicate the products obtained by mixing (3-oxo-3-phenylpropyl)triphenylphosphonium bromide with sodium hydride.arrow_forward
- We mix N-ethyl-2-hexanamine with excess methyl iodide and followed by heating with aqueous Ag2O. Indicate the major products obtained.arrow_forwardIndicate the products obtained by mixing acetophenone with iodine and NaOH.arrow_forwardIndicate the products obtained by mixing 2-Propanone and ethyllithium and performing a subsequent acid hydrolysis.arrow_forward
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