Science Combined 0653: B9. Coordination and response Topical Past Paper Questions

The graph shows how the percentage of bacteria resistant to four antibiotics, W, X, Y and Z, changes between 2000 and 2012. percentage of bacteria resistant to antibiotics What can be deduced from the graph? A Bacteria had no resistance to any of the antibiotics in 2000. B The pe…

(a) Fig. 3.1 shows the structure of a virus and a bacterial cell. Fig. 3.1 Complete the labels on Fig. 3.1. Choose words from the list. cell membrane cell wall cytoplasm nucleus plasmid protein coat (b) Some viruses and bacteria are pathogens. Platelets in blood help to defend ag…

Which statements correctly describe tropic responses? 1 Gravitropism is the growth of a shoot toward the light. 2 Gravitropism is the growth of a root downwards. 3 Phototropism is the growth of a shoot toward the light. 4 Phototropism is the growth of a root downwards. A 1 and 2…