The diagram below represents a process that occurs during protein synthesis - NSC Life Sciences - Question 2 - 2023 - Paper 2
Question 2
The diagram below represents a process that occurs during protein synthesis.
(a) The DNA base triplet complementary to the middle codon on molecule Z
(b) Y
2.1.3 N... show full transcript
Worked Solution & Example Answer:The diagram below represents a process that occurs during protein synthesis - NSC Life Sciences - Question 2 - 2023 - Paper 2
Step 1
Identify molecule Z (a)
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Answer
The DNA base triplet complementary to the middle codon on molecule Z is TAC.
Step 2
Identify molecule Y (b)
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Answer
Molecule Y is the tRNA molecule that carries the corresponding amino acid.
Step 3
Name and describe the process shown in the diagram during the formation of a protein (2.1.3)
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Answer
Translation
Translation is the process where the information in mRNA is used to build a corresponding protein. It involves several key steps:
Initiation: The mRNA attaches to the ribosome.
tRNA Binding: The tRNA molecule binds to the mRNA by matching its anticodon with the codon on the mRNA.
Peptide Bond Formation: Amino acids carried by tRNA are linked together to form a polypeptide chain through peptide bonds.
Termination: When a stop codon is reached, the translation process ends, and the newly formed protein is released.