Chemical components of cells -- Energy, catalysis, and biosynthesis -- Protein structure and function -- DNA and chromosomes -- DNA replication, repair, and recombination -- From DNA to protein: how cells read the genome -- Control of gene expression -- How genes and genomes evolve -- Analizing genes and cells -- Membrane structure -- Membrane transport -- How cells obtain energy from food -- Energy generation in mitochondria and chloroplasts -- Intracellular compartments and transport -- Cell communication -- Cytoskeleton -- The cell division cycle -- Sex and genetics -- Cellular communities : tissues, stem cells, and cancer.