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In living things, glycine can react with other amino acids to form polypeptides and proteins - VCE - SSCE Chemistry - Question 7 - 2002 - Paper 1
Question 7
In living things, glycine can react with other amino acids to form polypeptides and proteins. This reaction between two or more amino acids to form a polypeptide is ... show full transcript
Worked Solution & Example Answer:In living things, glycine can react with other amino acids to form polypeptides and proteins - VCE - SSCE Chemistry - Question 7 - 2002 - Paper 1
Step 1
Identify the Reaction Type
Answer
The reaction described is the formation of polypeptides and proteins from amino acids, which occurs through a process of dehydration synthesis. In this process, two amino acids undergo a condensation reaction, releasing a molecule of water and forming a peptide bond.
Step 2
Choose the Correct Option
Answer
Based on the definitions of the options provided:
- A. condensation: This is the correct answer as it refers to the process of joining molecules by removing water.
- B. esterification: This is a related process but involves the formation of esters, not peptide bonds.
- C. hydrolysis: This is the opposite of condensation; it involves breaking down molecules by adding water.
- D. nitrification: This is a completely different process related to the nitrogen cycle.
Thus, the correct classification for the reaction between two or more amino acids to form a polypeptide is A. condensation.