The Pals will tell you how many questions you get right each time you take a quiz, but they will never tell you which ones are right or wrong! To score a full amount you have to keep retaking and revising until you know the subject inside out!
125 Revision questions that should fit in to Biology for 15-16 year olds. GCSE in the UK, High School level in the U.S. The questions are split in to quizzes of 5, quick enough to be done on the go.
You MUST revise properly using your schools revision help. These quizzes will only help you two remember some basics!