Biology 9700 · AS & A Level · Protein synthesis

Protein synthesis — practice question

(a)[4]

Describe how the ribosome functions during translation.

(b(i))[1]

State the tRNA anticodon base sequence that is complementary to codon 1.

(b(ii))[1]

State the DNA sequence that encoded codon 3.

(c)[3]

The three codons in Fig. 5.1 are close to the beginning of the sequence that codes for a protein. Explain the effect of a mutation that deletes the U from codon 2.

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This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: tRNA binds to mRNA at codons

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