Subjects
Biology practice, free.
Human physiology, genetics and cell biology, plants and ecology, with an explanation for every question and timed tests like the real exam.
- 81questions
- 7topics
- 2exams covered
- Freeno plans or paywalls
Biology in Hong Kong
Practise biology with the exams you can take in Hong Kong.
Where do you want to start?
- 56 questions · 4 topicsGenetics and cell biologyThe cell, inheritance and the molecules that carry information.Cells, Biological Molecules and Genes · Genetics, Evolution and Biotechnology · Cells and Molecules of Life
- 17 questions · 2 topicsHuman biology and healthHow the human body works, how it reproduces and what makes it ill.Human Physiology · Health and Disease
- 8 questions · 1 topicsPlants, ecology and diversityHow plants work, how living things are grouped, and how they live together.Plants and Ecology
The most practised topics.
Each topic has its own list of questions with explanations. Pick the exam you are preparing for.
Cells, Biological Molecules and Genes
19 questions across 1 exam
Genetics, Evolution and Biotechnology
19 questions across 1 exam
Human Physiology
10 questions across 1 exam
Cells and Molecules of Life
9 questions across 1 exam
Genetics and Evolution
9 questions across 1 exam
Plants and Ecology
8 questions across 1 exam
Health and Disease
7 questions across 1 exam
Real questions, worked answers.
- Cells, Biological Molecules and Genes · Cambridge A-LevelWhich organelle is the main site of aerobic respiration in a eukaryotic cell?See the answer and explanation →
- Genetics, Evolution and Biotechnology · Cambridge A-LevelWhat term describes the different forms of a gene found at the same locus on a chromosome?See the answer and explanation →
- Human Physiology · HKDSE (Hong Kong)Which blood vessel carries oxygenated blood from the lungs to the heart?See the answer and explanation →
Practise it for real.
Biology in your exam.
How to practise biology.
- 1
Learn diagrams by drawing them
Sketch the cell, the heart or the nephron from memory, then check. Drawing fixes the labels better than reading.
- 2
Link structure to function
For every part, ask what it looks like and why that suits its job. It turns lists into reasons.
- 3
Say it in one sentence
After each chapter, write one sentence for each process. If you cannot, that is the part to revise.
- 4
Watch the exact words
Many wrong options differ from the right one by a single word, such as 'always', 'only' or 'all'.
- 5
Redo your mistakes after a week
Repeat the questions you got wrong after a few days. That is when a fact either sticks or fades.
Questions, answered.
- Is the biology practice really free?
- Yes. Every question, explanation, mock test and flashcard deck is free, with no plans or paywalls.
- Which exams does it cover?
- Biology questions from HKDSE (Hong Kong), Cambridge A-Level. There are 81 biology questions on this page's list today.
- Does every question have an explanation?
- Yes. Each question has an explanation with the working or the key idea, and you can open any question on its own page.
- Can I take a timed test?
- Yes. The mock tests below run on a real timer and show a full review with explanations at the end.