Intro - Introduction 1/30 1 Biology the study of life 2...

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Introduction 1/30 1) Biology: the study of life 2) What is life? (Characteristics on Earth) a) Metabolism: all chemical reactions in cells that are used in energy acquisition and conversion b) Reproduction c) Growth d) Composed of cell(s)/ complex system of organization e) Response to stimuli (movement) f) Common biological molecules (DNA) g) Homeostasis: the ability to maintain a constant internal environment/ equilibrium (i.e.: temperature) no matter what changes in the external environment h) Potential to evolve 3) Levels of Organization (simple complex): a) Atoms molecules organelles C ELL tissue organ system organism species population community ecosystem biosphere b) Cell= basic unit of life 4) Types of Living Things a) Plants b) Animals c) Fungi d) Bacteria e) Protists (amoeba) HW: on a 3x5 index card: Are viruses living? Why or why not? 2/1 Classification 1) Criteria a) Types of cells i) Prokaryotic : simple; no nucleus ii) Eukaryotic : nucleus, large, complex b) Number of cells i)
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