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Biology Bio = life ology = the study of Molecular biology zoology botany ecology evolution genetics.

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Presentation on theme: "Biology Bio = life ology = the study of Molecular biology zoology botany ecology evolution genetics."— Presentation transcript:

1 Biology Bio = life ology = the study of Molecular biology zoology botany ecology evolution genetics

2 Abiotic and biotic factors Abiotic = NONLIVING Rocks, rain, river, soil, air, etc. All abiotic factors are recycled Conservation of mass Matter is neither created or destroyed Biotic = LIVING things Trees, cats, worms, insects, fish, humans Referred to as organisms

3 Biotic factors 5 characteristics 1. Complex and organized (order) 2. Use energy to maintain homeostasis 3. Grow and develop 4. reproduce 5. Adapt and respond

4 Why? Natural tendency towards entrophy Increased state of disorder = loss of usable energy Organisms developed complex organization to use energy to maintain homeostasis (same state). This ability enables the organism to develop, grow and Most importantly, reproduce. Successful growth and reproduction also depends on an Organisms ability to adapt and respond to the environment

5 Biological themes Hierarchy of organization Least complex more complex includes emergent characteristics Kingdoms Monera Protista Fungi Plantae Aniamlia Atom molecule organelles CELL tissue organ Organ system organism population Community ecosystem biosphere

6 CELL The basic unit of life The smallest unit that displays all five characteristics Of living things Prokaryotes simple Eucaryotes more complex Biological themes

7 DNA provides mechanism that allows information to be passed on from generation to generation inheritance = continuity of life. Structure and function are related Biological themes On all levels

8 Organisms are open systems Continuous with their environment Matter and energy cycled through biotic and abiotic Organisms interact with other organisms producers consumers

9 Biological themes Regulation Enzymes catalyze chemical reactions Feedback mechanisms Positive feedback Negative feedback

10 Diversity and unity Estimated 5-30 million species Each species unique Scientists classify organisms based on similarities between species Identical molecular components exist in all organisms Biological themes

11 Classification Traditional 5 kingdom classification Monera * Protista * Fungi * Plantae * Animalia More accurate 3 domain system Bacteria * Archaea * Eukarya

12 Biological themes Evolution Life evolves Darwins natural selection Individual variation Struggle for existence Differential reproductive success

13 Hypothetico-deductice reasoning Deductive = if…then Scientific method Biological themes Science – Technology - Society Science and technology, good or bad, ARE a Part of modern society Multidisciplinary endeavor not independent from other fields of study


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