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Multiple Choice
What kind of functional group is present in glyceraldehyde-3-phosphate (G3P)?
A
Phosphate ester
B
Carboxylic acid
C
Aldehyde
D
Ketone
Verified step by step guidance
1
Begin by identifying the structure of glyceraldehyde-3-phosphate (G3P). G3P is a three-carbon molecule with a phosphate group attached to the third carbon.
Recognize the functional groups present in the molecule. G3P contains an aldehyde group, which is characterized by the presence of a carbonyl group (C=O) bonded to a hydrogen atom and a carbon chain.
Identify the phosphate ester group. In G3P, the phosphate group is attached to the third carbon, forming a phosphate ester. This is characterized by the presence of a phosphate group (PO₄) bonded to an organic molecule via an ester linkage.
Consider the presence of other functional groups. G3P does not contain a carboxylic acid group, which would be characterized by a carbonyl group bonded to a hydroxyl group (COOH).
Evaluate the presence of a ketone group. G3P does not contain a ketone group, which would be characterized by a carbonyl group bonded to two carbon atoms.