Three days left. Paper 1 is where the required practicals live: microscopy, osmosis, enzymes and photosynthesis all get tested here, and they're the marks students revise least. Here's the order that gets you the most in the time you've got.
One focus per day, building to a timed run. Work it in order.
Ranked from analysed past papers. Start at the top: if you run out of time, you will have covered the most-tested ground.
Four required practicals sit inside Paper 1 content, and method-based questions on them appear every year. Students who only learn the theory and skip the practical steps lose easy marks.
The starting point for the whole paper: comparing animal, plant and bacterial cells, and naming organelle functions, comes up as short-answer and labelling questions almost every series.
Enzyme action (lock and key, temperature/pH effects) combines biology knowledge with graph-reading and is a reliable source of 4-6 mark questions.
Labelling the heart and explaining the double circulatory system is one of the most consistently tested organisation topics. Know the direction of blood flow, not just the names of chambers.
'Explain how alveoli are adapted' is a classic 3-mark question. You need all three adaptations (large surface area, thin walls, good blood supply) to get full marks, not just one.
How the body defends itself against pathogens, plus vaccination and herd immunity, regularly appears as an extended 6-mark response question.
Comes with its own required practical (light intensity vs rate) and is tested through both recall of the word equation and graph/limiting factor questions.
Students frequently mix up the two anaerobic pathways. Know that animals make lactic acid, while plants and yeast make ethanol and carbon dioxide.
PrepWise has a one-page Knowledge Organiser for every topic above. In your final 3 days, use them the same way each time: cover the page, try to recall everything from memory, uncover and check what you missed, then repeat that topic again tomorrow.
Rules specific to Paper 1. On this paper, structure earns as many marks as knowledge.
'Describe' wants what happens: state the pattern or process. 'Explain' wants why it happens: you must give a reason or mechanism. Losing marks by describing when asked to explain is one of the most common and avoidable errors on this paper.
Image size = actual size × magnification. Rearrange it either way depending on what the question gives you, and always convert units to the same scale (usually µm) before you calculate. Show your working. Method marks are available even if the final number is wrong.
For the 6-mark extended response, write in connected paragraphs, not bullet points. State the process, then explain each step in order, using command words from the question. Examiners are marking for a logical chain of reasoning, not isolated facts.
Expect questions asking you to identify a control variable, explain why a variable was controlled, or suggest an improvement to the method. Revise the actual steps of each required practical, not just what the practical was about.
The errors examiners see most on this paper. Each one is an easy mark you already know how to keep.
Confusing diffusion, osmosis and active transport → Osmosis is specifically the movement of water across a partially permeable membrane. If the question doesn't mention water, it isn't osmosis. Check which of the three processes actually fits before you answer.
Writing 'the enzyme dies' or 'the enzyme is killed' at high temperature → Enzymes are not alive, so they can't die. Say the enzyme is denatured: its active site changes shape so the substrate no longer fits.
Only giving one adaptation when a structure has several → Questions on alveoli, villi or root hair cells usually want more than one adaptation for full marks. Check the mark allocation: if it's 3 marks, you likely need three separate points.
Muddling the two types of anaerobic respiration → Animals (including humans) produce lactic acid. Plants and yeast produce ethanol and carbon dioxide. Mixing these up in an exam answer costs an easy mark.
Not using the command word to shape the answer length → 'State' or 'name' wants a short answer, so don't waste time explaining. 'Explain' or 'evaluate' wants reasoning: a one-word answer won't get the marks. Match your answer length to the marks and command word.
The 60 minutes before you walk in. Review what you know and settle your nerves.
Reading this plan is not the same as being able to do it. Answer exam-style Biology questions in PrepWise, get them marked in seconds, and find the gaps while you still have time to fix them.
Open the Biology Knowledge Organisers, quiz every priority topic and walk in ready. Free during alpha.
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