Which organisms are capable of surviving as a single cell?

• bacteria

• human

• fern

• fish

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Which of these is a structure that is found in all all organisms?

• a tissue

• a cell

• a stomach

• a brain

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Which best describes a single-celled organism?

• small group of organisms

• a small organism with a variety of parts

• an organism that relies on other organisms to survive

• an organism that is able to carry out all its life processes

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NGSS.MS-LS1-1

Paramecium and bacteria are both single-celled

organisms. What do they most likely have in common?

• Both paramecium and bacteria are large organisms.

• Both paramecium and bacteria can carry out all life functions in their one cell.

• Both paramecium and bacteria need sunlight and nutrients from the soil to be able to grow.

• Both paramecium and bacteria are highly specialized to do only one job so they must work with other cells to obtain food.

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NGSS.MS-LS1-1

An organism can only be seen through a microscope. Which is most likely true of that organism?

• It is a plant.

• It is a animal.

• It is multicellular.

• It is unicellular.

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This organism can only be seen through a microscope. In addition, it does not depend on other cells to survive. It can independently perform all of its major functions needed to survive.

Which best describes this organism?

• It is a plant.

• It is complex.

• It is single-celled.

• It is multicellular.

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NGSS.MS-LS1-1

Charles is reading a book about amoebas. Which statement will Charles most likely read in his book?

• Amoebas have one cell that performs many tasks.

• Amoebas have one cell that performs a single task.

• Amoebas have many cells and each performs many tasks.

• Amoebas have many cells and each perform a dance.

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Select ALL the organisms that are single-celled:

• plant

• paramecium

• bacteria

• euglena

• amoeba

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NGSS.MS-LS1-1

Identify and select THREE of the five life processes:

• use energy/get food

• dance and be happy

• get rid of waste

• respond to their environment

• grow and smeeze

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How is it possible for single-celled organisms to survive?

• They are small and can easily avoid predators.

• They have all of their needs met within one cell.

• They have adapted to live only in specific environments.

• They depend on other cells to obtain food, water, and other

  resources.

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