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On the diagram, clearly identify ONE nucleotide by placing a box around it - HSC - SSCE Biology - Question 16 - 2004 - Paper 1
Question 16
On the diagram, clearly identify ONE nucleotide by placing a box around it. Structure of portion of a DNA molecule Senior Biology, RJ King and FM Sullivan, Longman... show full transcript
Worked Solution & Example Answer:On the diagram, clearly identify ONE nucleotide by placing a box around it - HSC - SSCE Biology - Question 16 - 2004 - Paper 1
Step 1
a) Clearly identify ONE nucleotide by placing a box around it.
Answer
To identify one nucleotide, you should locate a single unit in the DNA structure, which includes a phosphate group, a deoxyribose sugar, and a nitrogenous base. Draw a box around any one nucleotide in the provided diagram.
Step 2
b) Outline the main steps of DNA replication.
Answer
- Initiation: The DNA double helix unwinds and separates into two strands at the replication origins.
- Elongation: Each strand serves as a template for the synthesis of a new complementary strand, facilitated by DNA polymerase. Nucleotides are added according to base pairing rules (A with T, and G with C).
- Termination: The replication process concludes when the entire DNA molecule has been copied. New double helices are formed, each consisting of one original and one new strand.