Long answer·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
Three amino acid molecules join in a chain to form a tripeptide.
Total: 4 marks
(a) How many peptide bonds are formed? (1 mark)
(b) How many water molecules are eliminated? (1 mark)
(c) Name the type of reaction. (1 mark)
(d) Why is the amino-acid sequence important? (1 mark)
Something wrong with this item?