what makes something living? what makes something non-living? turn in: 1. scientific method homework
TRANSCRIPT
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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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What does it mean to be living?
• 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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7 Characteristics of Life• 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