Biology 9700 · AS & A Level · Structure of nucleic acids and replication of DNA

Structure of nucleic acids and replication of DNA — practice question

(a)[3]

Describe the function of DNA polymerase during DNA replication.

(b(i))[1]

Suggest why preventing DNA replication is an effective treatment for cancer.

(b(ii))[1]

Explain why floxuridine has no effect on transcription.

(c(i))[1]

Name the stage of the cell cycle shown in Fig. 6.1.

(c(ii))[3]

Explain why smoking tobacco raises the risk of developing lung cancer.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: Adds a nucleotide onto the growing polynucleotide strand

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