Biology 7401: Biological molecules Topical Past Paper Questions

Lyme disease is most frequently caused by the bacterium Borrelia burgdorferi. Lyme disease can be difficult to diagnose. Figure 5 shows an ELISA test that is used to find out if a person has antibodies to B. burgdorferi. Figure 5 A false positive in this test is a result which in…

Galacto-oligosaccharides (GOS) are polymers of galactose. 1 Explain why GOS are described as polysaccharides. [2 marks] 2 Give two differences between the structures of GOS and lactose. [2 marks] 1 2 3 Explain why amylase produced in the human digestive system does not digest GOS…

1) What term is used to describe the different structures of $ \alpha $-glucose and $ \beta $-glucose? [1 mark] 2 A student investigated the difference in the reducing sugar content of two fruit juices. He performed a biochemical test on each fruit juice using Benedict's solution…