Test it & Fix it: KCSE Revision is a revision series that provides an in-depth coverage of the secondary syllabus. Developed by a team of experienced authors, examiners and teachers, each book contains tests designed to help candidates identify any problems they may have in a particular subject and fix them. Why Test it & Fix it? Test it & Fix it: KCSE Revision Biology provides: essential examination skills including key words used in examinations question and answer summaries covering all specific objectives and the topics in the Biology syllabus revision questions in each unit model examination papers to help candidates practise answering questions in the KCSE examination answers for all the questions.