Take turns answering questions. If you answer incorrectly, your time is halved and play switches.
The quiz ends when a player's timer reaches zero.
Quiz Mode
Starting Time
30 seconds
Think Time
0 seconds
Bonus Time
0 seconds
Revise biology with free Class Duels revision quizzes for KS3 and GCSE, covering Cells and Organisation, Cellular Respiration, Ecosystems, Gas Exchange and more.
Choose a topic above for focused practice, or use the links below to open a topic page or view its question collection where one is available.
