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]

Fig. 4.1 shows the structure of deoxyribose sugar. State how the deoxyribose structure shown in Fig. 4.1 differs from the ring structure of $\alpha$-glucose.

(b)[4]

Match the biological macromolecule to the bond type formed as it is synthesised. Choose from the list: amylose, cellulose, triglyceride, protein, amylopectin, mRNA.

(c)[1]

State the type of reaction involved in the formation of a polynucleotide chain.

(d)[4]

Complete Table 4.1 by showing four differences between DNA replication and DNA transcription.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: There are six carbon atoms

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI