Read the amino acid sequence of a drawn peptide

This type of question, asked 2 times: 29 Jan 2023, 28 Jan 2026 S1. All 2 questions below, oldest first.

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Question 1
29 Jan 2023
129 $Following tetrapeptide can be represented as (F, L, D, Y, I, Q, P are one letter codes for amino acids)$
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Question 2
28 Jan 2026 S1
39 $In the given pentapeptide, find out an essential amino acid (Y) and the sequence present in the pentapeptide: Choose the correct answer from the options given below:$
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