IB Biology HL A1.2 Nucleic Acids Questions
Practise IB Biology HL A1.2 with questions on nucleotide structure, DNA and RNA, complementary pairing and the information stored in sequences.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- compare DNA and RNA structure using sugars, bases, strands and complementary pairing
- interpret nucleotide sequences to infer genetic information and RNA or DNA relationships
- explain how nucleotide order and base pairing preserve or express genetic information
Covered syllabus points
A1.2.1—DNA as genetic materialA1.2.2—Components of a nucleotideA1.2.3—Sugar-phosphate bondingA1.2.4—Bases form the basis of a codeA1.2.5—RNA as a polymerA1.2.6—DNA as a double helixA1.2.7—Differences between DNA and RNAA1.2.8—Complementary base pairingA1.2.9—Diversity of DNA base sequencesA1.2.10—Conservation of genetic codeA1.2.11 (HL)—Directionality of RNA and DNAA1.2.12 (HL)—Purine-to-pyrimidine bonding and helix stabilityA1.2.13 (HL)—Structure of a nucleosomeA1.2.14 (HL)—Hershey-Chase experimentA1.2.15 (HL)—Chargaff's data
Learn this topic
Question 1
The image shows the results of Griffith's experiment with S and R strains of Streptococcus pneumoniae in mice (Mus musculus).
What is an explanation for the results?
A
Mice vary in their resistance to bacteria.
B
The R strain and S strain mated.
C
R strain bacteria are more heat-stable than S strain.
D
DNA was transferred from heat-killed S cells to R cells.
Question 2
Draw a labelled diagram to show the structure of a single nucleotide of RNA.
Question 3
What is the arrangement of the components of nucleotides in a single DNA strand?
A
B
C
D
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