Multiple Choice
Which of the following functional groups is commonly used in the Gram staining technique in microbiology?
2. Molecular Representations
Functional Groups
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Which of the following functional group pairings is mismatched?
A
Alcohol - Hydroxyl group
B
Ketone - Carbonyl group
C
Amine - Carboxyl group
D
Aldehyde - Carbonyl group
Verified step by step guidance1
Step 1: Begin by understanding the functional groups mentioned in the problem. A functional group is a specific group of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.
Step 2: Review the definitions of each functional group pairing. An alcohol contains a hydroxyl group, which is represented as . A ketone contains a carbonyl group, represented as . An aldehyde also contains a carbonyl group, but it is bonded to a hydrogen atom, represented as . An amine contains a nitrogen atom bonded to hydrogen atoms or carbon chains, represented as .
Step 3: Analyze the pairing 'Amine - Carboxyl group'. A carboxyl group is represented as and is found in carboxylic acids, not amines. Amines are characterized by the presence of nitrogen, not a carboxyl group.
Step 4: Compare each pairing to ensure they are correctly matched based on the definitions. Alcohols, ketones, and aldehydes are correctly paired with their respective functional groups. The pairing 'Amine - Carboxyl group' is incorrect because amines do not contain a carboxyl group.
Step 5: Conclude that the mismatched pairing is 'Amine - Carboxyl group', as amines are associated with nitrogen-containing groups, not carboxyl groups.
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