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A single strand of DNA consists of a long chain of monomers called nucleotides - VCE - SSCE Chemistry - Question 4 - 2010 - Paper 1
Question 4
A single strand of DNA consists of a long chain of monomers called nucleotides. The structure of one of these nucleotides of DNA is shown below. Each nucleotide wil... show full transcript
Worked Solution & Example Answer:A single strand of DNA consists of a long chain of monomers called nucleotides - VCE - SSCE Chemistry - Question 4 - 2010 - Paper 1
Step 1
a. Circle only the letters which represent the sites where this nucleotide can form bonds with other nucleotides to form a single strand of DNA.
Answer
To form a single strand of DNA, the nucleotide can form bonds at sites C and D, which are part of the sugar-phosphate backbone. Here, the phosphate group (attached to D) can bond with the OH group at C of another nucleotide, allowing for a continuous strand.
Step 2
b. Name the type of bonding that holds the two strands in human DNA together.
Answer
The type of bonding that holds the two strands of DNA together is hydrogen bonding. These hydrogen bonds form between the complementary bases on the opposite strands, crucial for the stability of the DNA double helix.
Step 3