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.2. Complex organization patterns 3. Use energy.4. Have stable internal conditions.5. grow and change.6. 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

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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

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Which level of organization is represented here?

Ecosystem

3. All Organisms use EnergySunlight

Producers (plants and other photosynthetic

organisms)

Consumers (including animals)

Chemical Chemical EnergyEnergy

Heat

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)

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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.

37⁰CAcceptable Range

Brrr…. Shiver… I am so cold!

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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

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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

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