Life Science Overview Cells, Classification, and Ecosystems.

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Presentation transcript:

Life Science Overview Cells, Classification, and Ecosystems

Cells the basic form of life two types (Prokaryotic and Eukaryotic Cells) Prokaryotic  Do not contain a nucleus bound membrane, but does have a cell membrane  Very simplistic (Basic)  Unicellular E. Coli

Eukaryotic Cells  Have a nucleus and membrane bound organelles  Has a cell wall and cell membrane  Very complex  Plants, Animals, Humans  Make up of unicellular and multicellular organisms Lung Cells

Organisms  Must be made of one or more cells  They reproduce  They grow  Respond to change  Need energy to live

Taxonomic Classification or Taxonomy Grouping of Organisms  Makes it easier for scientists to study organisms 8 Groups  Domain(3), Kingdom(6), Phylum, Class, Order, Family, Genus, and Species 3 Domains  Eukarya, Bacteria and Archaea 6 Kingdoms  Plantae, Animalia, Fungi, Eubacteria, Archaebacteria, and Protista

Taxonomy 6 Kingdoms 3 Domains

Ecosystems 4 Levels of the Ecosystem  Organism The lowest level of an Ecosystem –A single Species  Population Two or more of the same Species (organism)  Community A collection of two or more populations in one area  Ecosystem The broadest level of an Ecosystem All Living things and their products (BIOTIC) and Non- Living things (ABIOTIC)

Biotic and Abiotic Factors  Biotic All the living things and their products Trees, Plants, Animals, Fungi, Protists, Leaves etc…  Abiotic Non-living things Air, Temperature, Water, Sunlight, Soil, Rocks etc…

Heterotrophs feed off other things to get their energy. Being heterotrophic is one of the main characteristics of being an animal. We eat things, whether it is plants or other animals. Heterotrophs are consumers in the food chain. Heterotrophs

 Humans  Animals  Fungi  Some Protists Examples of Heterotrophs

 Organisms that make their own food are autotrophic such as plants, most bacteria, and archaea. They are producers in the food chain. Autotrophs

Cells, Classification, and Ecosystems 1.What is the main difference between prokaryotic and eukaryotic cells? 2.What are 3 characteristics of organisms? 3.What is the broadest level of classification? 4.List the 3 taxonomic Domains and the 6 Kingdoms. 5.What are the 4 levels of an ecosystem? 6.What is the difference between abiotic and biotic factors in a ecosystem? 7.What is the difference between a heterotroph and an autotroph?