Biology Sample Tests (Grade 12 LS)

Dear Students,

Welcome to today’s biology contest! This exam is designed to test the depth of your understanding of advanced topics—cell and molecular biology, genetics, evolution, human physiology, and ecology—as well as your ability to apply scientific reasoning to novel problems.

Read each question carefully, show all steps of your reasoning, and don’t forget to include appropriate units or terminology where required. Manage your time wisely; some questions may require a bit of thought before the answer clicks.

You’ve prepared diligently, so treat this as an opportunity to showcase your knowledge and enjoy the challenge. Good luck, stay focused, and have fun exploring the living world!