Explain6 marksChallenge
Explain the similarities and differences between the structure of a DNA nucleotide that contains adenine and an ATP molecule. In your answer, refer to the components of each molecule and their roles in the cell.
CAIE A Level Biology 9700 · Nucleic acids and protein synthesis
Nucleic acids and protein synthesis: explain question
How this question is marked
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
More Nucleic acids and protein synthesis questions
- 6 marks · Two DNA samples, A and B, are isolated from different organisms. Sample A contains 60% C-G base pairs, while sample B contains 40% C-G…
- 7 marks · In a eukaryotic gene, the coding strand (non-template strand) contains the following sequence: 5' – ATG GGA TAC CCT – 3' The triplet GGA…
- 6 marks · A bacterial gene encoding a short polypeptide has the following sequence for its coding (non-template) strand: 5' – ATG GCA TTG TGA – 3'…
- 5 marks · A short gene in a eukaryotic cell has the following DNA coding strand sequence (5' to 3'): ATG GCT TAC GGA TAA The mRNA transcribed from…
- 5 marks · During the S phase of the cell cycle, DNA replication occurs. Describe why one daughter strand (the leading strand) is synthesised…
- 5 marks · The table shows the percentages of the four bases in a sample of double-stranded DNA isolated from a bacterium. Base Percentage (%) A 28 T…
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.