Infection and response Quiz
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5 questions, one answer each
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1. Which of the following is the correct definition of a pathogen?
- A. A microorganism that causes disease
- B. Any microorganism found in the human body
- C. A type of white blood cell that fights infection
- D. A substance produced by bacteria to help them survive
2. Malaria is caused by a protist pathogen and is spread by mosquitoes. What is the term used to describe an organism like a mosquito that spreads disease?
- A. A vector
- B. A host
- C. A toxin
- D. A symbiont
3. Bacteria cause disease through two main mechanisms. Which of the following correctly describes both methods?
- A. By producing antigens and by entering host cells
- B. By producing toxins and by damaging cells
- C. By reproducing inside cells and by destroying the immune system
- D. By producing antibodies and by blocking nutrient absorption
4. Which row correctly matches pathogen types to examples of diseases they cause?
- A. Bacteria: malaria; Virus: ringworm; Fungi: HIV/AIDS; Protist: tuberculosis
- B. Bacteria: tuberculosis; Virus: HIV/AIDS; Fungi: ringworm; Protist: malaria
- C. Bacteria: HIV/AIDS; Virus: tuberculosis; Fungi: malaria; Protist: ringworm
- D. Bacteria: ringworm; Virus: malaria; Fungi: tuberculosis; Protist: HIV/AIDS
5. A virus causes disease by entering a human cell. Explain why this mechanism results in damage to the host organism.
- A. Viruses produce toxins that poison the cytoplasm whilst inside the cell
- B. Viruses enter cells and reproduce inside them, which damages or destroys the cells as new viruses are released
- C. Viruses block the cell membrane, preventing nutrient uptake and causing starvation
- D. Viruses trigger the immune system to attack all healthy cells in the body