Explain the significance of complementary base pairing for DNA replication.
Water is known for its unique property of cohesion, which plays a critical role in biological and environmental systems.
Define the property of cohesion.
The diagram shows the structure of a typical eukaryotic cell. Which organelle is responsible for protein synthesis?
Based on the diagram of water as a solvent describe how water dissolves both ionic and polar covalent compounds.
Based on the diagram of water as a solvent describe how water dissolves both ionic and polar covalent compounds.
Explain how mutations in DNA can affect the structure and function of proteins, providing specific examples.
The diagram shows a cladogram of insect species. What does the length of the branches on the cladogram represent?
Outline the causes of variation in one example of continuous variation in humans.
Explain how evolution occurs and which factors can cause the process to be rapid.
Certain communities have a higher incidence of red-green colour blindness. Describe the inheritance of red-green colour blindness.
A population of insects develops resistance to a pesticide. What evolutionary mechanism is responsible for this adaptation?
Explain the concept of convergent evolution and provide examples of organisms that exhibit this pattern.
The diagram shows a phylogenetic tree of selected organisms. Which of the following represents the closest relationship between species?
