"Explain" questions — Edexcel A-Level Biology A: Salters-Nuffield (9BN0)
141 questions · biology · View as Markdown
How to answer
WHAT + WHY. Every point paired with a because. Structure: X happens because Y. This causes Z because … Assessment Objective: AO2. Every "explain" answer on this spec is marked against exactly this pattern.
Sample questions
- A student eats a large meal containing a lot of sugar. Explain how the body detects the change in blood glucose concentr…
- Explain how the sliding filament model accounts for muscle contraction, including the roles of actin, myosin and ATP in …
- A patient is diagnosed with HIV. Over several years, the number of white blood cells in the patient's body decreases sig…
- A student investigates the effect of light intensity on the rate of photosynthesis in pond weed. As light intensity incr…
- A person is infected with a new strain of influenza (flu) virus for the first time. Explain how the immune system respon…
- A coral reef ecosystem contains the following food chain: phytoplankton → zooplankton → small reef fish → reef sharks. S…
- Tuberculosis (TB) is a communicable disease caused by the bacterium Mycobacterium tuberculosis. It is spread when an inf…
- A patient visits their doctor and is told they have high blood cholesterol levels and high blood pressure. The doctor ex…