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First: Re-take Science Quiz Then: Characteristics of Life Discussion Then: Outside! Learning Target: Identify the 8 characteristics of life and apply them to living and non-living things Discuss in your table groups: What is it that makes something alive? What characteristics do an elephant, a beetle, a tree, a bacterium, and a virus all have in common? Characteristics of Life Life’s characteristics unify all living things Cells - the basic unit of life Characteristics of Life Energy Consumption And Life’s resulting Organization Organisms Sense and Respond to Change (respond to external stimuli) Living things are irritable! Organisms must maintain a stable internal environment: Homeostasis All organisms exhibit Growth and Development Characteristics of Life All organisms have Genetic Material in the form of DNA and RNA Reproduction • DNA is stable and can be passed from parent to offspring Adaptation through Evolution • DNA is also able to change through time by way of mutation which can lead to variation and adaptive traits, natural selection, and ultimately evolution and adaptation in a population Reproduction • DNA is stable and can be passed from parent to offspring Adaptation through Evolution • DNA is also able to change through time by way of mutation which can lead to variation and adaptive traits, natural selection, and ultimately evolution and adaptation in a population Descent Charles Darwin’s big idea: descent with modification (variation in a population) by way of natural selection with Modification The Characteristics of Life Unify all living things • Energy consumption • Cells • Response to external stimuli • Homeostasis • Growth and Development • Genetic material (DNA and RNA) • Reproduction • Adaptation through Evolution Scavenger hunt time! We are going to go outside! 1. With your group take a picture of something that is alive. 2. Email your photo to me at [email protected] • When we come back you will have to explain how your photographed something exhibits all of the characteristics of life. • Which characteristics are really obvious in your photo? Are Viruses Alive? 1. Read “Are Viruses Alive?” 2. Should viruses be classified as alive? On a separate sheet of paper, write a paragraph arguing your point. The paragraph should be at least 8 sentences long