Living Things in the Biosphere

The basic structural and functional 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

• the ability to move

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A worm turns away from light is an example of a worm __________________ . pg. 18

• reproducing

• doing cellular respiration

• having cells

• responding to its environment

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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Blue crabs molt or shed their exoskeletons several times before reaching adulthood illustrating which feature of living things?

• reproduction

• response

• growth and development

• homeostasis

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A turtle burrows in the mud to avoid intense heat during the summer months in a process known as estivation. This allows the turtle to maintain its body temperature. Which answer is the best explanation for this behavior?

• metabolism

• adaptation

• growth and development

• homeostasis

Plants make their own food through the process of photosynthesis. Which characteristic of living things best describes photosynthesis?

• grow and develop

• have levels of organization

• reproduce

• require energy

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The scientific name for a living thing is _______________. pg. 18

• organism

• bacteria

• virus

• parasite