Practice A1.2 Nucleic acids with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
What allows complementary base pairing to occur between strands of DNA?
Complementary base pairing enables replication and transcription. What condition is required for base pairing to occur accurately?
What is a key requirement for a condensation reaction to occur between nucleotides during DNA synthesis?
Which feature is present in RNA but not in DNA?
DNA is found in all living organisms. What type of genetic material is found in some viruses that are not classified as living?
What allows DNA to store a virtually unlimited amount of genetic information?
DNA is used as genetic material by all living organisms. What inference can be drawn from the fact that some viruses use RNA instead of DNA?
The antiparallel nature of DNA strands is crucial to its structure. Which pairing best reflects the orientation of two complementary strands?
In both DNA and RNA, nucleotides are linked together to form a strand. What type of bonding connects the sugar of one nucleotide to the phosphate of the next?
The immense storage capacity of DNA is due to its structural properties. Which of the following best explains this capacity?