4.3 Infection and response

Practice questions on Infection and response

• Explain why tobacco mosaic virus (TMV) reduces the growth of infected plants. (4 marks, Explain)
• Explain why monoclonal antibodies are described as 'monoclonal' and outline one advantage … (4 marks, Explain)
• Explain why communicable diseases can spread rapidly through a population. (4 marks, Explain)
• Explain how a pathogen can spread from one person to another through the air. (4 marks, Explain)
• Describe how the body's natural defences prevent pathogens from entering the bloodstream. (4 marks, Describe)
• Explain why washing hands regularly reduces the risk of spreading communicable diseases. (4 marks, Explain)
• Describe the role of white blood cells in defending the body against pathogens after they … (4 marks, Describe)
• Pregnancy testing kits use monoclonal antibodies to detect the hormone hCG in urine. Expla… (4 marks, Explain)
• Explain how monoclonal antibodies can be used to target cancer cells without harming healt… (4 marks, Explain)
• Describe how monoclonal antibodies are produced, starting from the injection of an antigen… (4 marks, Describe)
• Explain why monoclonal antibodies can be used to detect the presence of a specific antigen… (4 marks, Explain)
• Explain how a gardener could identify that a plant is suffering from a mineral ion deficie… (4 marks, Explain)
• Explain how a pathogen can be spread from one plant to another in a garden. (4 marks, Explain)
• Describe how plants defend themselves against attack by pathogens and insects. (4 marks, Describe)
• Explain how plants detect and respond to damage caused by insects. (4 marks, Explain)