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Published byMitchell Sparks Modified over 9 years ago
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What makes something living? What makes something non-living? Turn in: 1. Scientific Method Homework
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Word break down What does “bio” mean? – What is a biography? – What does it mean to write your instagram bio? What does “-ology”mean? – Psychology? Sociology? – Bonus points: campanology?
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Biology Biology means the study of life Based on that definition, what should we learn in this class?
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What does it mean to be living?
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Lucky for us, scientists created a list of 7 criteria that an organism must meet in order to be classified as ‘living’
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7 Characteristics of Life 1. All living things are composed of cells.
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Matter Matter is anything and everything that takes up space – Desks, you, air, bananas, cockroaches etc. All matter, living and non-living, is made up of atoms – These are like tiny Legos that get put together to make up something larger
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Atoms A computer is made up of atoms You are made up of atoms What is the difference?
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7 Characteristics of Life 2. All living things have metabolism and use energy. This is usually in the form of ATP. What do we need energy for?
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7 Characteristics of Life 3. Reproduce and have heredity Can be sexual or asexual
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7 Characteristics of Life
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4. Grow and Develop
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7 Characteristics of Life 5. Respond to stimuli What is a stimulus? In this picture, what is responding?
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7 Characteristics of Life 6. Evolve and adapt over time What is the difference?
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Evolution: genetic change over time – Individuals do NOT evolve – Populations Evolve Adaptation: change in order to better fit the environment – Individuals CAN adapt
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7 Characteristics of Life 7. Maintain homeostasis
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Homeostasis: the ability of a system to maintain equilibrium
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What about viruses??? Viruses do: have DNA or RNA, respond to stimuli, evolve, require energy Viruses are not: able to reproduce on their own, made up of cell(s),
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Ebola Virus
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