Biology

**Historical Development of Biology:**
– Science roots traced back to ancient Egypt and Mesopotamia
– Contributions by Greek philosophers like Aristotle
– Islamic scholars like al-Jahiz writing on biology
– Advancements in microscopy leading to discoveries such as spermatozoa and bacteria
– Evolutionary theories by Lamarck and Darwin shaping modern biology

**Chemical Basis in Biology:**
– Organisms composed of elements like oxygen, carbon, hydrogen, and nitrogen
– Essential compounds like water for life
– Biochemistry studying chemical processes in living organisms
– Molecular biology focusing on biological activities at the molecular level
– The Human Genome Project mapping the human genome

**Cellular and Molecular Biology:**
– Cell theory stating cells as the basic units of life
– Eukaryotic cells with a nucleus and organelles
– Macromolecules consisting of monomers like lipids, proteins, and nucleic acids
– Metabolism involving all chemical reactions in an organism
– Cell cycle, genetics, genes, DNA, and gene expression processes

**Energy Processing and Biological Functions:**
– Energy processing enabling movement, growth, and reproduction
– Cellular respiration converting nutrients into ATP
– Fermentation processes in the absence of oxygen
– Photosynthesis converting sunlight into chemical energy
– Cell signaling mechanisms and cell cycle regulation

**Evolutionary Biology and Genetics:**
– Genetics studying inheritance and gene passing
– Genes and DNA controlling organism form or function
– Gene regulation and gene expression processes
– Development, stem cells, cellular differentiation, and morphogenesis
– Evolutionary processes, phylogeny, and the history of life on Earth