HKDSE Biology exam-day guide
HKDSE Biology · Prepare for the day ahead.
Your checklist
Admission form / candidate slip and valid photo ID
Bring the admission document issued to you and the identification document it specifies. Confirm with the provider (HKEAA or your school as exam centre) which ID types are accepted and whether a signature is required on the form.
Black or blue ballpoint pens and a soft pencil with eraser
You will write structured answers in ink and shade multiple-choice answer sheets in pencil. Bring at least two working pens and a spare pencil, plus a clean eraser.
A transparent pencil case or clear plastic bag
Many centres require stationery to be visible and stored in a clear container; opaque pencil cases may be asked to be put away. Confirm the exact rule with your exam centre.
A simple, non-programmable calculator
Biology papers involve some calculation (magnification, percentages, ratios). Bring a calculator you are familiar with; programmable or graphing calculators are generally not permitted. Confirm the permitted calculator list with the provider.
A plain analogue watch (no smart features)
Exam halls may not display a visible clock you can rely on. A basic wristwatch helps you pace yourself. Smart watches and phones must be switched off and stored as instructed.
No notes, textbooks, or annotated materials
Leave revision notes at home or in a bag stored away from your desk. Bringing unauthorised materials into the hall can be treated as a conduct violation.
Know your candidate number and seat/centre details
Check the centre address, reporting time, and your candidate number the day before. Arrive early to allow time for seating and instructions.
Plan food, water, and toilet breaks around the paper
Eat a normal breakfast or lunch; avoid heavy or unfamiliar food. Use the toilet before entering the hall, since leaving during the paper may be restricted and time is not usually added back.
Check the paper's structure and time allocation beforehand
Know how many sections, the marks per section, and whether there is a multiple-choice section. This shapes your pacing plan more than any last-minute fact.
Prepare a one-page summary of formulas and key processes
Use it for the final 24 hours only, then set it aside. Focus on magnification formula, transport processes, enzyme and photosynthesis/respiration summaries, genetics ratios, and ecology terms.
Plan the day
Stop learning new topics. Work through past-paper-style questions under timed conditions, then mark them and write a short list of recurring error types (e.g., confusing osmosis with diffusion, missing units, vague explanations). Re-read only your own summaries and correct those specific errors.
Do one full timed paper matching the real format and duration. Practise allocating time per section and leaving a few minutes to check. Afterwards, review mark-scheme wording: examiners reward precise terms such as 'active transport', 'partially permeable membrane', and 'limiting factor' rather than everyday paraphrases.
Light review only: skim your one-page summary, diagrams of the heart, nephron, leaf cross-section, and food webs, and the genetics ratio patterns. Pack your stationery and admission documents. Confirm the centre location and journey time. Sleep at your normal time; do not cram past midnight.
Eat a normal meal, dress comfortably in layers, and arrive at the centre with time to spare. Switch off your phone and store it as instructed before entering the hall. Skim only your summary sheet outside the hall; do not try to memorise new material.
Read the instructions and check the paper has all pages and sections. Note the total marks and divide your time accordingly. Scan questions to identify the ones you can answer quickly, then start there to build momentum.
Answer in the required language and format. For data questions, quote figures with units and state the trend before explaining it. For 'explain' questions, give a cause-and-effect chain rather than a single word. If stuck, leave space and move on; return later.
Check that every question has an attempt, that multiple-choice answers are shaded clearly, and that units and directions (increase/decrease) are stated. Correct obvious slips but avoid changing answers without a clear reason.
Rules to check
Follow all instructions from the invigilator. Raise your hand if you need to speak; do not communicate with other candidates once the paper has been distributed.
Bring only permitted items to your desk. Phones, smart watches, and unauthorised electronic devices must be switched off and stored as directed; possession at the desk may be treated as a violation.
Keep your admission form and ID available for checking. Confirm with the provider what to do if you lose your admission form or arrive without acceptable ID.
Arrive before the reporting time. Late arrival may be admitted at the invigilator's discretion, but extra time is not normally granted; confirm the late-arrival policy with the provider.
Leaving the hall during the paper is usually restricted and may require an escort; time lost is generally not made up. Use the toilet before the paper begins.
Write your candidate number where required and do not write anything that could identify you beyond the requested details. Do not write in margins or on materials the paper says to leave blank.
Marks are awarded for correct scientific terminology, clear cause-and-effect reasoning, and appropriate units and significant figures; a correct idea expressed vaguely may not earn full marks.
If you believe there is a problem with the paper or your conditions, tell the invigilator immediately rather than after the exam; confirm the appeal or special-consideration procedure with the provider.