Living Things in our Biosphere

The basic unit of life is called a (n)

• atom
• compound
• cell
• energy

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In order to be considered living an organism must have

• blood
• cells
• brains
• hair

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A worm turns away from light is an example of a worm __________________ .

• reproducing

• doing cellular respiration

• having cells

• responding to its environment

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Which of the following characteristics of living things best explain a cat having a litter of kittens?

• living things respond to their environment

• living things maintain homeostasis

• living things reproduce

• living things are based on a genetic code

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Which of the following characteristics of living things best explains why humans sweat when they get hot?

• maintaining a stable internal enviornment

• growth and development

• using energy

• ability to reproduce

Before a soccer game Charlie always eats a big dinner. Which characteristic of life does this fact best describe?

• living things use energy

• living things reproduce

• living things grow and develop

• living things are based on a universal genetic code

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The scientific name for a living thing is _______________.

• organism

• bacteria

• virus

• parasite

Which is an example of a single-celled organism?

• bird

• cricket

• snake

• bacteria

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Organisms that make their own food are _________________________ and include things like ___________________.

• organized, bacteria
• autotrophic, plants
• heterotrophic, mushrooms
• autotrophic, mushrooms

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Organisms that consume other organisms are _________________________ and include things like _________________________.

• Heterotrophic, animals

• Autotrophic, animals

• Heterotrophic, plants

• Autotrophic, mushrooms