IB DP Biology Standard Level (2023 syllabus) · IB ib-bio-sl
A Unity and diversity
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Unity and diversity
- Explain how the polarity of water molecules enables water to act as a solvent for ionic co… (4 marks, Explain)
- Explain how the thermal properties of water help maintain stable internal temperatures in … (4 marks, Explain)
- Explain how water acts as a metabolite in living organisms, giving two distinct examples o… (4 marks, Explain)
- Explain how the high specific heat capacity of water arises from hydrogen bonding between … (4 marks, Explain)
- Explain why RNA is described as a single-stranded molecule and outline how this structural… (4 marks, Explain)
- Explain how the base sequence of DNA acts as a store of genetic information. (4 marks, Explain)
- Explain how the structure of a DNA nucleotide is related to its role as a monomer in the f… (4 marks, Explain)
- Explain why all existing cells are thought to have originated from pre-existing cells rath… (4 marks, Explain)
- Explain why viruses are not considered to be living cells, despite containing genetic mate… (4 marks, Explain)
- Explain how the structure of the cell surface membrane is related to its function in contr… (4 marks, Explain)
- Explain how the structure of the ribosome is related to its role in protein synthesis. (4 marks, Explain)
- Explain how the binomial system of nomenclature and the hierarchical classification system… (4 marks, Explain)
- Outline the characteristics that are used to place an organism into the kingdom Animalia, … (4 marks, Outline)
- Explain how a clade differs from a traditional taxonomic group, and why paraphyletic group… (4 marks, Explain)
- Explain how artificial selection differs from natural selection in the mechanism by which … (4 marks, Explain)
- Explain how the edge effect, resulting from habitat fragmentation, can reduce the biodiver… (4 marks, Explain)
- Explain how the establishment of wildlife corridors can help to maintain biodiversity in f… (4 marks, Explain)
- Explain how the Convention on International Trade in Endangered Species of Wild Fauna and … (4 marks, Explain)
- Explain how the use of environmental impact assessments (EIAs) can contribute to the conse… (4 marks, Explain)
- Explain how stabilising selection differs from directional selection in its effect on the … (4 marks, Explain)
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