What type of reaction joins two amino acids, and what is released?
Answer and explanation
Correct answer: A. A condensation reaction between the amine group of one and the carboxyl group of the other, releasing water
- Step 1: The amine group (-NH2) of one amino acid reacts with the carboxyl group (-COOH) of the other.
- Step 2: A peptide (amide) bond forms and a molecule of water is lost, so it is a condensation reaction.
Answer
condensation reaction releasing water.
Why not the others: Amine groups do not join each other; hydrolysis is the reverse; R groups are not involved in the peptide link.
Practise more Organic Chemistry and Chemical Analysis.
Free questions with an explanation for every one, and full timed Victorian VCE mock tests.
More Organic Chemistry and Chemical Analysis questions
- What is the IUPAC name of the compound with the structure CH3CH2CH(CH3)CH3?
- Ethanol reacts with ethanoic acid in the presence of concentrated sulfuric acid. What are the organic product and the role of the sulfuric a…
- What is the systematic name of CH3CH2COOCH3?
- Propan-1-ol is heated with acidified potassium dichromate solution until the reaction is complete. What are the final organic product and th…
- Propene reacts with bromine water. Which observation and product are expected?
- How many structural isomers has butane, C4H10, including butane itself?