The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Bold Type Media:
Bold Type Media LLC: Biology I Lite app is a fully functional application of the Biology I app for first semester college level Biology. Some features of the application include, designing your own quizzes or choosing one of the Quick Quiz buttons to generate a quiz. The Biology I Lite version has a smaller number of quiz questions and Quick Quiz questions that can be generated. The View Questions section allows you to study all the question and answers. You can hide and flag questions for later review as well. The Stat section gives you a visual and numerical representation of your progress in answering questions of the quizzes you have generated.The Biology I Lite version has only 5 questions in each of the following subjects. The full version of the Biology I app has over 1000 questions in all the subjects listed below.Exploring LifeChemistry of LifeWaterCarbonMacromoleculesCellMembrane StructureMetabolismCellular RespirationPhotosynthesisCell CommunicationCell CycleMeiosisMendelChromosomal InheritanceMolecular InheritanceGene to ProteinBacteria GeneticsEukaryotic GenomesDNA TechnologyGenetic DevelopmentDecent ModificationEvolution PopulationOrigin of SpeciesPhylogenyThis application requires no network connection.