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Biology Bio = life ology = study of Biology = study of life

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Presentation on theme: "Biology Bio = life ology = study of Biology = study of life"— Presentation transcript:

1 Biology Bio = life ology = study of Biology = 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 Living things depend on abiotic factors to live Abiotic factors recycled Matter cannot be created or destroyed

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

5 complex and organized

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) Use energy to maintain homeostasis ENERGY is used to maintain HOMEOSTASIS. Nutrients are RECYCLED

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

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

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

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

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


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