Biology A (9-1) - Gateway Science Suite J247 9-1: Genes, inheritance and selection Topical Past Paper Questions

Acrylamide is a chemical that is formed when bread is toasted. (a) Experiments have shown that significant doses of acrylamide can cause cancer in animals. (i) Describe the effects of cancer on cells. [2] (ii) Some scientists concluded that, ‘acrylamide could also cause cancer in…

The demand for food in the world is growing. One possible solution to this is the use of aquaculture. This involves farming fish, such as salmon, in large cages in lakes or the sea as shown in the diagram. However, growing salmon in cages allows parasites on their body to spread…

This question is about the evolution of plants and animals on Earth. I like question to about the evolution of plants and animals on Laul. (a) What is meant by the term evolution? [2] (b) Describe the work of Charles Darwin which led him to develop a theory of how evolution could…