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Biology Bio = lifeology = study ofBiology = study of life Biotic factors = ALL LIVING things in an environment Trees, cats, fish, bacteria, etc. Abiotic.

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Presentation on theme: "Biology Bio = lifeology = study ofBiology = study of life Biotic factors = ALL LIVING things in an environment Trees, cats, fish, bacteria, etc. Abiotic."— Presentation transcript:

1 Biology Bio = lifeology = study ofBiology = study of life Biotic factors = ALL LIVING things in an environment Trees, cats, fish, bacteria, etc. Abiotic factors = ALL NONLIVING things Air, rocks, water, rivers, etc Abiotic factors recycled Matter cannot be created or destroyed Living things depend on abiotic factors to live

2 Characteristics of living things ALL living things MUST HAVE the following characteristics 1. Be complex and organized 2. Use energy (to maintain homeostasis) 3. Grow (and develop) 4. reproduce 5. Respond and adapt

3 Overview Natural tendency is for universe and matter to move towards an increasing state of disorder This involves a LOSS of usable energy 40% of energy produced in human metabolism is lost as heat Organisms have developed a complex/organized system that allows Them to maintain homeostasis (same state) System requires energy to do work Because organisms maintain homeostasis, they are able to grow and reproduce Successful growth and reproduction depends on an organisms ability to adapt and respond to the environment (immediately and over time

4 Heirarchy Levels of organization Atom molecule CELL tissue organ organ system Organism population community ecosystem biosphere complex and organized

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6 Life captures energy from the sun and converts that energy into NUTRIENTS. (photosynthesis). NUTRIENTS are broken down and converted into usable ENERGY. (cellular respiration) ENERGY is used to maintain HOMEOSTASIS. Nutrients are RECYCLED Use energy to maintain homeostasis

7 The CELL is the smallest unit that exhibits all the characteristics of living things Organisms may be single celled (unicellular) or multicellular complex and organized

8 ALL organisms contain Deoxyribonucleic acid (DNA ) UNITY DNA is inherited DNA determines the pattern of growth and development complex and organized

9 While all organism are unified in possessing DNA, differences in DNA arrangement makes all organisms DIFFERENT DIVERSITY DNA RNA (transcription) RNA protein (translation Grow and develop Reproduce

10 Organisms are CLASSIFIED in a HEIRARCHY based on GENETIC (inherited DNA )differences. Classification and Evolution The THREE DOMAINS Because DNA is INHERITED, classification by genetic differences provides evidence for EVOLUTION Reproduce Grow and develop complex and organized

11 ADAPT and RESPOND Organisms that are NOT able to ADAPT and RESPOND to a constantly changing environment WILL NOT SURVIVE Failure to survive = failure to reproduce Failure to reproduce = loss of genetic information (DNA) Adapt and Respond

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