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What attributes identify something as living?
Characteristics of Life! What attributes identify something as living?
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C H O G E R CHOGER
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- cells C Smallest unit of organism that can be considered alive.
All living organisms are composed of cells. Multicellular – cells are specialized.
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- Homeostasis H “staying the same”
Maintains a stable internal condition- examples include: Cell’s water Body temp pH Various chemical balances Body adapts to environment
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O - Organization Every living thing is highly organized.
Cells are highly organized. Cells are grouped together by function (skin, kidney, etc.). Why is this important? Example: Human body has 200+ different types of cells.
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- Growth G Each organism has a distinct life cycle.
All living things grow (some non-living things do also?) Development – organism becoming an adult (dogs begin as a cell and develop into an adult dog). Cells increase in number and differentiate during development.
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E - Energy Use All living things use energy…METABOLISM
Why do living organisms need energy? maintain molecular and cellular organization grow and reproduce How do living organisms get their energy? Autotrophs Heterotrophs
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R - Reproduction Why is reproduction important for species?
Survival of the species…not the individual organism Can all species reproduce? Sexual reproduction – offspring not identical to parents Asexual reproduction – identical to parent
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C - Cells H - Homeostasis O - Organization G - Growth E - Energy Use R - Reproduction CHOGER
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Do we know everything about biology? No Why? It’s huge and diverse!
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