All nine essential amino acids are found in quinoa - VCE - SSCE Chemistry - Question 3 - 2021 - Paper 1
Question 3
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 the... show full transcript
Worked Solution & Example Answer: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.
Step 2
Circle the peptide bond in the dipeptide above.
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Answer
The peptide bond can be identified between the carboxyl group of one amino acid and the amino group of another. In the given dipeptide structure, the bond is recognized as the bond connecting the carbon (C) of the carboxyl group (C=O) of one amino acid to the nitrogen (N) of the amino group (NH) of the other amino acid.
Step 3
Name the amino acid with the non-polar Z group, which is involved in the formation of the dipeptide.
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Answer
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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Answer
Papaya contains an enzyme called papain, which helps break down protein molecules into smaller peptides and amino acids. This facilitates the digestion process by increasing the efficiency of protein hydrolysis, thereby aiding digestion when papaya is consumed with protein.
