a. All nine essential amino acids are found in quinoa - VCE - SSCE Chemistry - Question 3 - 2021 - Paper 1
Question 3
a. All nine essential amino acids are found in quinoa.
State what is meant by an essential amino acid.
An essential amino acid is one that cannot be synthesized by ... show full transcript
Worked Solution & Example Answer:a. All nine essential amino acids are found in quinoa - VCE - SSCE Chemistry - Question 3 - 2021 - Paper 1
Step 1
State what is meant by an essential amino acid.
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Answer
An essential amino acid is one that cannot be synthesized by the body and therefore must be included in the diet to ensure adequate nutrition.
Step 2
i. Circle the peptide bond in the dipeptide above.
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Answer
The peptide bond can be identified as the bond between the carbon of the carboxyl group of one amino acid (C=O) and the nitrogen of the amino group of the adjacent amino acid (N-H). It is typically represented by the C-N bond for clarity in diagrams.
Step 3
ii. Name the amino acid with the non-polar Z group, which is involved in the formation of the dipeptide.
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The amino acid with the non-polar Z group involved in the formation of the dipeptide is Isoleucine.
Step 4
Explain why papaya can aid protein digestion.
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Papaya contains the enzyme papain, which is a protease that aids in breaking down protein molecules into smaller peptides and amino acids. This enzyme facilitates the hydrolysis of peptide bonds, enhancing digestion and absorption of proteins consumed in a meal.
