Back to the full dot-point answer
SingaporeBiotechnologyQuick questions
DNA and Genetic Material
Quick questions on Structure of DNA: O-Level DNA and Genetic Material
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the double helix?Show answer
Two strands of nucleotides twist around each other to form a double helix, often pictured as a twisted ladder.
What is complementary base pairing?Show answer
The two strands are joined by hydrogen bonds between the bases, and the bases pair in a fixed way:
What is q1?Show answer
State the three parts of a DNA nucleotide. [3 marks]
What is q2?Show answer
Name the base that pairs with (a) adenine and (b) cytosine. [2 marks]
What is q3?Show answer
Write the complementary strand for the sequence G G T A C. [2 marks]
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.