Twenty First Century Science* is a suite of complementary specifications offering flexible and exciting options for science at GCSE* is unique in having been extensively trialled over three years with more than 6,000 students in each year* is motivating, stimulating and relevant.The specifications and resources are the products of close collaboration between the University of York Science Education Group, the Nuffield Curriculum Centre, OCR, and Oxford University Press.The GCSE Biology course contains seven modules:* B1 Your and your genes* B2 Keeping healthy* B3 Life on Earth* B4 Homeostasis* B5 Growth and development* B6 Brain and mind* B7 Further Biology, including Living organisms are interdependent, Photosynthesis, Heterotrophic nutrition, New technologies, Respiration, Circulation, and Skeletal systemsB1 to 3 are as modules B1 to 3 in GCSE Science, and B4 to 6 are as modules B4 to 6 in GCSE Additional Science.A comprehensive set of resources is available:* A Textbook* A Workbook which can be used for homework and provides the student with a set of summary notes to help with revision.* A Teacher and Technician Guide with lesson plans for B7, including assessments, homeworks, and activity sheets. For B1 to 3 and B4 to 6 please see the Teacher and Technician Guides for GCSE Science and GCSE Additional Science.For more information, visit:www.twentyfirstcenturyscience.org