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.