The following is a sequence of amino acids located within a polypeptide: - Asn – Gly – Pro – Arg – Ser –
1st position (5' end)
| U | C | A | G |
|---|---|---|---|
| Phe | Ser | Tyr | Cys | U |
| Leu | Ser | STOP | STOP | A |
| Leu | Pro | His | Arg | C |
| Leu | Pro | Gln | Arg | C |
| Leu | Pro | Gly | Arg | C |
| Ile | Thr | Asn | Ser | U |
| Met | Thr | Lys | Arg | C |
| Val | Ala | Asp | G |
| Val | Ala | Glu | Gly | A |
| Val | Ala | Glu | Gly | G | - VCE - SSCE Biology - Question 23 - 2015 - Paper 1
Question 23
The following is a sequence of amino acids located within a polypeptide: - Asn – Gly – Pro – Arg – Ser –
1st position (5' end)
| U | C | A | G |
|---|---|---|---|
... show full transcript
Worked Solution & Example Answer:The following is a sequence of amino acids located within a polypeptide: - Asn – Gly – Pro – Arg – Ser –
1st position (5' end)
| U | C | A | G |
|---|---|---|---|
| Phe | Ser | Tyr | Cys | U |
| Leu | Ser | STOP | STOP | A |
| Leu | Pro | His | Arg | C |
| Leu | Pro | Gln | Arg | C |
| Leu | Pro | Gly | Arg | C |
| Ile | Thr | Asn | Ser | U |
| Met | Thr | Lys | Arg | C |
| Val | Ala | Asp | G |
| Val | Ala | Glu | Gly | A |
| Val | Ala | Glu | Gly | G | - VCE - SSCE Biology - Question 23 - 2015 - Paper 1
Step 1
Asn
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Answer
The amino acid Asparagine (Asn) is coded by the codon AAC or AAU, based on the second and third positions of the mRNA sequence.
Step 2
Gly
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Answer
Glycine (Gly) is represented by the codons GGC, GGG, GGA, and GGU, which will be determined by analyzing the corresponding amino acids in the provided table.
Step 3
Pro
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Answer
Proline (Pro) is encoded by the codons CCA, CCC, CCG, and CCU. Its specific encoding can be identified in the sequence presented.
Step 4
Arg
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Answer
Arginine (Arg) can be encoded by multiple codons: CGA, CGC, CGG, CGU, AGA, and AGG, which will all relate to the sequence in question.
Step 5
Ser
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Answer
Serine (Ser) is encoded by the codons UCU, UCC, UCA, UCG, AGU, and AGC, which can be seen in the table.
