Warm-up On page 93 of your IntNB, answer the following question in 3-5 sentences: – What makes something alive?

Six Characteristics of Living Things 1.Composed of cells.cells 2.Complex organization patternsorganization 3.Use energy.energy 4.Have stable internal conditions.stable internal conditions 5.grow and change.grow and change 6.reproducereproduce

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 down larger molecules into to make energy (i.e., Cellular Respiration) – Anabolism: Uses energy to create larger molecules in cells (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.Changes occur during the life cycle of an organism b.Some changes are inherited, which over time are called __________.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 Back

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