Pearson Edexcel A-Level Biology A (9BI0) · EDEXCEL 9BI0
5 Microbiology, immunity and ecology
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Microbiology, immunity and ecology
- A student is culturing bacteria on agar plates in a school laboratory. Describe the asepti… (5 marks, Describe)
- A student wants to grow bacteria on agar plates to investigate the effect of temperature o… (5 marks, Explain)
- A student wants to use an autoclave before culturing bacteria on agar plates in a school l… (5 marks, Explain)
- A student cuts their hand and bacteria enter the body through the wound. Explain how T-lym… (5 marks, Explain)
- A person receives a vaccination against influenza. Some months later, the same person is e… (5 marks, Explain)
- A hospital records an increase in the number of patients infected with a strain of Staphyl… (5 marks, Explain)
- Decomposers play an essential role in the recycling of nutrients in ecosystems. Explain ho… (5 marks, Explain)
- A compost heap contains kitchen waste such as vegetable peelings and fruit scraps. A garde… (5 marks, Explain)
- A farmer stores bales of hay outdoors over winter. By spring, the bales that were left unc… (5 marks, Explain)
- A student leaves a piece of bread in a warm, moist cupboard. After two weeks, the bread is… (5 marks, Explain)
- A fallen oak tree in a forest is gradually broken down over several years. Explain the con… (5 marks, Explain)
- A new strain of tuberculosis (TB) bacteria has emerged that is resistant to several antibi… (5 marks, Explain)
- Scientists are concerned that some strains of bacteria have become resistant to multiple a… (5 marks, Explain)
- Explain why the development of antibiotic-resistant bacteria is a serious threat to human … (5 marks, Explain)
- A patient is prescribed a course of antibiotics to treat a bacterial infection. After a fe… (5 marks, Explain)
- A person contracts a bacterial infection for the first time. Explain how B-lymphocytes res… (5 marks, Explain)
- A person with HIV is said to have a weakened immune system. Explain why a person with HIV … (5 marks, Explain)
- Explain how the immune system responds when a pathogen enters the body for the first time … (5 marks, Explain)
- Malaria is a communicable disease caused by the protist Plasmodium, which is spread to hum… (5 marks, Explain)
- Tuberculosis (TB) is a communicable disease caused by the bacterium Mycobacterium tubercul… (5 marks, Explain)
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