Microalgae and cyanobacteria are the first organisms in the oceanic food chain and are essential producers of oxygen and effective carbon dioxide traps. They are traditional sources of food proteins for Aztec, African and Asian populations, and some of them have even acquired the status of superfoods. Microalgae reviews the biological, ecological and biochemical characteristics of microalgae and cyanobacteria. They are true cellular factories, producing substances of interest such as original pigments, proteins and polysaccharides with biological activities. Their use covers many sectors of human activity including aquaculture, livestock breeding, agri-food, and human and veterinary medicine. This book presents their mode of production and the transformation processes that are applied to them, as well as the traditional and future valorization of algae. As they are a source of lipids and fatty acids, microalgae have become the focus of attention for the development of green fuels, such as biofuel.

Providing complete step-by-step coverage of the 2008 Edexcel GCE Biology specification, Salters-Nuffield Advanced Biology (SNAB) is the official support material for the context-led approach to the specification. Written by the University of York Science Education Group (UYSEG) and Nuffield Curriculum Centre, this Students' Book offers students motivating and relevant content to improve exam performance and ensure students fulfil their full potential. Gives students an in-depth, scientific understanding of the principles covered in each topic, including How Science Works. Broad range of teaching and learning activities helps students develop an understanding of biology concepts and principles. Covers topics that interest students and includes practical and ICT activities, which are supported by SNAB online. Integral scientific, mathematical and key skills are learned and tested throughout. Extension and revision materials included for thorough exam preparation. Check-point questions provide summary-style tasks that help students build up revision notes.