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Which of the following pairs of stereoisomers are related as enantiomers? a) A & B; C&D b) A& C; B&D c) A&D; B&C d) C&D; B&C

Which of the following pairs of stereoisomers are related as enantiomers? a) A & B; C&D b) A& C; B&D c) A&D; B&C d) C&D; B&C

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Which of the following pairs of stereoisomers are related as enantiomers?

a) A & B; C&D
b) A& C; B&D
c) A&D; B&C
d) C&D; B&C
 
 
 
 
 
**Understanding the Stereochemistry of Amino Acids** The image displays four different structural configurations of the amino acid serine, which highlights the concept of stereoisomerism, a critical aspect in the study of biochemistry and organic chemistry. The structures labeled A, B, C, and D present different spatial arrangements of serine’s substituent groups. ### Structure Details: - **Structure A**: - **Groups attached to the central carbon (chiral center)**: - Top: Hydrogen (H) - Left: Amine group (NH2) - Right: Methyl group (CH3) - Bottom: Hydroxyl group (OH) - **Structure B**: - **Groups attached to the central carbon (chiral center)**: - Top: Amine group (H2N) - Left: Hydrogen (H) - Right: Methyl group (CH3) - Bottom: Hydroxyl group (OH) - **Structure C**: - **Groups attached to the central carbon (chiral center)**: - Top: Amine group (H2N) - Left: Hydrogen (H) - Right: Hydroxyl group (OH) - Bottom: Methyl group (CH3) - **Structure D**: - **Groups attached to the central carbon (chiral center)**: - Top: Hydrogen (H) - Left: Amine group (H2N) - Right: Hydroxyl group (OH) - Bottom: Methyl group (CH3) ### Explanation of the Concept: Each structure demonstrates the concept of chirality, where the central carbon (chiral center) is bonded to four different groups. The different spatial arrangements lead to different isomers, known as enantiomers, which can have significantly different biological activities. Understanding these structures is essential in chemistry as it helps us comprehend the diversity and specificity of molecular interactions in biological systems. These diagrams are useful for students learning about the stereochemistry of amino acids, as they illustrate how varying the position of substituent groups around a chiral center can result in different isomers.
Transcribed Image Text:**Understanding the Stereochemistry of Amino Acids** The image displays four different structural configurations of the amino acid serine, which highlights the concept of stereoisomerism, a critical aspect in the study of biochemistry and organic chemistry. The structures labeled A, B, C, and D present different spatial arrangements of serine’s substituent groups. ### Structure Details: - **Structure A**: - **Groups attached to the central carbon (chiral center)**: - Top: Hydrogen (H) - Left: Amine group (NH2) - Right: Methyl group (CH3) - Bottom: Hydroxyl group (OH) - **Structure B**: - **Groups attached to the central carbon (chiral center)**: - Top: Amine group (H2N) - Left: Hydrogen (H) - Right: Methyl group (CH3) - Bottom: Hydroxyl group (OH) - **Structure C**: - **Groups attached to the central carbon (chiral center)**: - Top: Amine group (H2N) - Left: Hydrogen (H) - Right: Hydroxyl group (OH) - Bottom: Methyl group (CH3) - **Structure D**: - **Groups attached to the central carbon (chiral center)**: - Top: Hydrogen (H) - Left: Amine group (H2N) - Right: Hydroxyl group (OH) - Bottom: Methyl group (CH3) ### Explanation of the Concept: Each structure demonstrates the concept of chirality, where the central carbon (chiral center) is bonded to four different groups. The different spatial arrangements lead to different isomers, known as enantiomers, which can have significantly different biological activities. Understanding these structures is essential in chemistry as it helps us comprehend the diversity and specificity of molecular interactions in biological systems. These diagrams are useful for students learning about the stereochemistry of amino acids, as they illustrate how varying the position of substituent groups around a chiral center can result in different isomers.
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