[BIOL 1F25] - Final Exam Guide - Comprehensive Notes for the exam (54 pages long!)

• School: Brock University
• Department: Biological Sciences
• Course: BIOL 1F25
• Professor: Joffre Mercier

Document Summary

Living things have a different molecular composition than nonliving things. 4 types of macromolecules lipids (fats) proteins carbohydrates nucleic acids (dna, rna) require energy and raw materials. Metabolism: physical and chemical processes that transform energy and molecules from one form to another, to sustain life. composed of cells cells: smallest unit that shows all characteristics of life unicellular organisms: composed of only one cell. Maintain a relatively constant internal environment homeostasis: keeping internal conditions near optimal levels. Eg: temperature, ion concentrations, acidity cell membrane: barrier for substances to enter cell"s internal space respond to the external environment plants turn towards sunlight bacteria move toward nutrients animals seek optimal temperature grow and reproduce unicellular organisms divide. Multicellular organisms start from a single cell that divides living organisms produce new organisms genetic material encoded in dna is passed onto offspring populations of living things evolve change from one generation to the next.