2.6 Disease, defence and treatments

Practice questions on Disease, defence and treatments

• Describe how the development of antibiotic-resistant bacteria is a danger to human health,… (4 marks, Describe)
• Explain why antibiotics cannot be used to treat diseases caused by viruses. (4 marks, Explain)
• Describe how the immune system produces antibodies in response to a new pathogen entering … (4 marks, Describe)
• Describe how the human body's physical defences prevent pathogens from entering the body. (4 marks, Describe)
• Explain how a pathogen can spread from one person to another through contaminated water. (4 marks, Explain)
• Explain why a person who has recovered from chickenpox is unlikely to become ill from the … (4 marks, Explain)
• Explain how the immune system responds when a pathogen enters the bloodstream for the firs… (4 marks, Explain)
• Explain why bacteria and viruses are both described as pathogens, and state ONE difference… (4 marks, Explain)
• Explain why a person who has recovered from a viral infection is often immune to that same… (4 marks, Explain)
• Explain how white blood cells protect the body when a pathogen enters the bloodstream. (4 marks, Explain)
• Explain why a second infection by the same pathogen is usually overcome much more quickly … (4 marks, Explain)
• Vaccination programmes aim to protect large populations from infectious diseases. Explain … (4 marks, Explain)
• Describe the stages involved in the clinical trial of a new medicine, from first use in hu… (4 marks, Describe)
• Explain why new medicines must be tested before they can be given to patients. (4 marks, Explain)
• Thalidomide was a drug developed in the 1950s as a sleeping pill. It was later found to be… (4 marks, Describe)