Sulfide Chemistry - GRE Subject Test: Chemistry

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Question

Which substrate, when subjected to ozonolysis followed by treatment with dimethyl sulfide, would give only one hydrocarbon product?

Answer

Ozonolysis is essentially used to cleave a compound at the location of a double bond. For the result to be a single product, the cleavage must occur at a point of symmetry.

4-octene, a symmetrical alkene, would give two equivalents of butanal upon ozonolysis. All of the other compounds are unsymmetrical and would give at least two different non-identical products.

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Question

Which of the following amino acids can participate in the formation of a disulfide bridge?

Answer

Cysteine's R-group contains a sulfhydryl group (-SH), which can participate in the formation of a disulfide bridge in a protein's tertiary and/or quaternary structure. Cysteine is the only amino acid to contain a sulfur atom.

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Question

Which substrate, when subjected to ozonolysis followed by treatment with dimethyl sulfide, would give only one hydrocarbon product?

Answer

Ozonolysis is essentially used to cleave a compound at the location of a double bond. For the result to be a single product, the cleavage must occur at a point of symmetry.

4-octene, a symmetrical alkene, would give two equivalents of butanal upon ozonolysis. All of the other compounds are unsymmetrical and would give at least two different non-identical products.

Compare your answer with the correct one above

Question

Which of the following amino acids can participate in the formation of a disulfide bridge?

Answer

Cysteine's R-group contains a sulfhydryl group (-SH), which can participate in the formation of a disulfide bridge in a protein's tertiary and/or quaternary structure. Cysteine is the only amino acid to contain a sulfur atom.

Compare your answer with the correct one above

Question

Which substrate, when subjected to ozonolysis followed by treatment with dimethyl sulfide, would give only one hydrocarbon product?

Answer

Ozonolysis is essentially used to cleave a compound at the location of a double bond. For the result to be a single product, the cleavage must occur at a point of symmetry.

4-octene, a symmetrical alkene, would give two equivalents of butanal upon ozonolysis. All of the other compounds are unsymmetrical and would give at least two different non-identical products.

Compare your answer with the correct one above

Question

Which of the following amino acids can participate in the formation of a disulfide bridge?

Answer

Cysteine's R-group contains a sulfhydryl group (-SH), which can participate in the formation of a disulfide bridge in a protein's tertiary and/or quaternary structure. Cysteine is the only amino acid to contain a sulfur atom.

Compare your answer with the correct one above

Question

Which substrate, when subjected to ozonolysis followed by treatment with dimethyl sulfide, would give only one hydrocarbon product?

Answer

Ozonolysis is essentially used to cleave a compound at the location of a double bond. For the result to be a single product, the cleavage must occur at a point of symmetry.

4-octene, a symmetrical alkene, would give two equivalents of butanal upon ozonolysis. All of the other compounds are unsymmetrical and would give at least two different non-identical products.

Compare your answer with the correct one above

Question

Which of the following amino acids can participate in the formation of a disulfide bridge?

Answer

Cysteine's R-group contains a sulfhydryl group (-SH), which can participate in the formation of a disulfide bridge in a protein's tertiary and/or quaternary structure. Cysteine is the only amino acid to contain a sulfur atom.

Compare your answer with the correct one above

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