"Explain" questions — WJEC A-Level Biology (Wales)
74 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
- Explain why it is difficult for scientists to research the structure and functions of the human brain.
- A person has been exercising vigorously in hot weather and has not drunk any water for several hours. Explain what happe…
- A patient is diagnosed with cancer after a routine screening. Explain how cancer develops in the body and describe two c…
- The cell membrane is described as selectively permeable and controls the movement of substances into and out of the cell…
- Explain how temperature affects the rate of an enzyme-controlled reaction, including what happens both below and above t…
- Explain how a change in pH away from an enzyme's optimum affects the rate of an enzyme-controlled reaction.
- Explain how the structure of a synapse allows a nerve impulse to pass from one neurone to the next.
- Explain how a rise in temperature above an enzyme's optimum affects the rate of reaction. In your answer, refer to the a…