Biology 6-marker trainer
The AQA GCSE Biology 6-markers that come up again and again — gas exchange, immunity and vaccination, exercise, blood glucose control, natural selection and osmosis. Plan the answer, self-mark against the level descriptors, then read a model Level 3.
How to use it: write your full answer first, then reveal the mark scheme and tick the points you made. AQA marks these by level — a detailed, linked answer — not by counting points, so the tick count is only a rough guide. Read the model answer to see what a Level 3 looks like.
Explain how the alveoli in the human lungs are adapted for efficient gas exchange.
Write your full answer first — then mark it.
Explain how a vaccine makes a person immune to a disease, and how vaccinating most of a population can protect people who are not vaccinated.
Write your full answer first — then mark it.
Explain how the human body responds to the increased demand for energy during a period of vigorous exercise.
Write your full answer first — then mark it.
Explain how the body controls the concentration of glucose in the blood when it rises after a meal and when it falls during exercise.
Write your full answer first — then mark it.
Explain how a population of antibiotic-resistant bacteria, such as MRSA, develops by natural selection.
Write your full answer first — then mark it.
Pieces of potato are left in a concentrated sugar solution. Explain, in terms of water movement, why the potato pieces lose mass.
Write your full answer first — then mark it.
The 6-markers are where the grades are
Send me your answer to one of these and I'll mark it like the examiner would — your first lesson is free.