Notes Bio 101 - BIO 101 Notes Bio Notes 9 Characteristics...

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BIO 101 Notes  01:21 Bio Notes 9 Characteristics of life Respond to external stimuli Alter the environment Sense the environment Adapt to the environment Use energy Reproduce Contains only materials only found in living things Have a high degree of organization Maintain homeostasis Homeo= unchanging Stasis= standing (staying the same) Homeostasis Controlled by conscious and unconscious responses Helps an organism stay alive through the use of feedback systems
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Feedback System Requires 3 components Stimulus receptor Monitors the environment and reports changes Control center Registers the signal from the stimulus receptor and formulates a response An effector Carries out the response Cells Smallest unit of life Contained in a cell membrane or cell wall Tissue A group of cells with a similar function Organ Structure composed of more than one tissue having one or more specific functions Organ systems A group of organs that perform a broad biological function Organism One living individual
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Taxonomy A branch of science which classifies organisms into different groups with similar characteristics 3 Domains Eubacteria Archaebacteria Eukarya 6 Kingdoms Archaebacteria Eubacteria Protista Fungi Plantae Animalia Classification is logical Kingdom Phylum Class Order Family
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Genus Species Genus and species names are either underlined or written in italics Variables Factors that can be changes in an experiment to test whether and how it affects the outcome Inductive Reasoning Creating a general statement from observations Deductive Reasoning Creating a general hypothesis to a specific situation 9/7/10 Bio Exam notes Taxonomy Levels Chemical Level (atoms, molecule) Cellular Level Tissue Level
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Organ Level Organ System Level Organism Level (homo sapiens) Tissue types Muscular Nervous Epithelial Connective Hierarchy of Life Individual Human population (comprised of individuals) Biological Community (populations of humans and other organisms interact) Ecosystem (communities united in geographic areas) Biosphere (all earth’s biomes comprise the biosphere) Viruses Unlike bacteria, viruses are not classified as living Scientific Method
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Observe Hypothesize Experiment
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Notes Bio 101 - BIO 101 Notes Bio Notes 9 Characteristics...

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