Warm-up What makes something alive?

Six Characteristics of Living Things 1.All living things are composed of cells.cells 2.Complex organization patterns are found in all living organisms.organization 3.All organisms use energy.energy 4.All organisms have stable internal conditions which must be maintained in order to remain alive.stable internal conditions 5.All organisms grow and change.grow and change 6.All organisms reproduce in order to continue the species’ life.reproduce

1. All Living Things are Composed of Cells Two types of cells: 1.Prokaryotic Cells Most are single- celled organisms 2.Eukaryotic Cells Prokaryotic Cell Eukaryotic Cell Back to Menu

2. Complex Organization Patterns Atomic Level Molecular Level Organelle Level Cellular Level Tissue Level Organ Level

2. Complex Organization Patterns Organism Level Population Level – Group of same species Community Level – Groups of different species Ecosystem Level – Living and non-living elements Biosphere Level Back to Menu

Which level of organization is represented here? Ecosystem 3. All Organisms use Energy Sunlight Producers (plants and other photosynthetic organisms) Consumers (including animals) Chemical Energy Heat

Metabolism: All of the chemical reactions that occur within an organism. – Catabolism: Breaks larger molecules down into smaller molecules to produce energy (i.e., Cellular Respiration) – Anabolism: Uses energy released by catabolic pathways to create cellular components (i.e., Photosynthesis) Back to Menu 3. All Organisms use Energy

4. All organisms have stable internal conditions which must be maintained in order to remain alive. This is called homeostasis. 37⁰C Acceptable Range Brrr…. Shiver… I am so cold! Back to Menu

5. All organisms grow and change. a.Changes occur during the life cycle of an organism. b.Some changes are inherited, which over time are called __________. adaptations

5a. Changes occur during an organism’s lifetime Differentiation: The process by which cells become increasingly different and specialized cvcvcc

5b. Organisms Adapt Back to Menu The inheritance of adaptations over time is evolution.

6. All organisms reproduce 1.Some organisms reproduce sexually. 2.Some organisms reproduce ________. asexually Back to Menu